{"id":13421,"date":"2026-03-06T13:09:31","date_gmt":"2026-03-06T13:09:31","guid":{"rendered":"https:\/\/korcosmetics.vn\/"},"modified":"2026-03-19T04:31:15","modified_gmt":"2026-03-19T04:31:15","slug":"acid-salicylic-la-gi-cong-dung-va-nhung-luu-y-khi-su-dung","status":"publish","type":"post","link":"https:\/\/korcosmetics.vn\/en\/acid-salicylic-la-gi-cong-dung-va-nhung-luu-y-khi-su-dung\/","title":{"rendered":"What is Salicylic Acid? Its benefits and precautions when using it"},"content":{"rendered":"<p><i><span style=\"font-weight: 400;\">C\u1ee9 nghe \u0111\u1ebfn nh\u1eefng thu\u1eadt ng\u1eef nh\u01b0 &#8220;t\u1ea9y t\u1ebf b\u00e0o ch\u1ebft h\u00f3a h\u1ecdc&#8221; hay &#8220;treatment tr\u1ecb m\u1ee5n&#8221;, Salicylic Acid lu\u00f4n chi\u1ebfm m\u1ed9t v\u1ecb tr\u00ed \u201c\u0111\u1ed9c t\u00f4n\u201d, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi nh\u1eefng ai \u0111ang s\u1edf h\u1eefu l\u00e0n da d\u1ea7u m\u1ee5n. V\u1eady th\u1ef1c ch\u1ea5t <\/span><\/i><b><i>Acid Salicylic l\u00e0 g\u00ec<\/i><\/b><i><span style=\"font-weight: 400;\">? N\u00f3 kh\u00e1c bi\u1ec7t th\u1ebf n\u00e0o so v\u1edbi c\u00e1c lo\u1ea1i acid kh\u00e1c?<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400;\">B\u00e0i vi\u1ebft c\u1ee7a <a href=\"https:\/\/korcosmetics.vn\/\"><strong>KOR<\/strong><\/a> s\u1ebd cung c\u1ea5p cho b\u1ea1n m\u1ed9t c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u00e0 chu\u1ea9n khoa h\u1ecdc nh\u1ea5t v\u1ec1 ho\u1ea1t ch\u1ea5t n\u00e0y.\u00a0<\/span><\/i><\/p>\n<h2><b>1. Gi\u1ea3i \u0111\u00e1p chi ti\u1ebft: Acid Salicylic l\u00e0 g\u00ec? BHA l\u00e0 g\u00ec?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh c\u1ea3i t\u1ea1o l\u00e0n da, b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 b\u1ea1n ph\u1ea3i th\u1ef1c s\u1ef1 hi\u1ec3u r\u00f5 v\u1ec1 th\u00e0nh ph\u1ea7n m\u00e0 m\u00ecnh s\u1eafp thoa l\u00ean m\u1eb7t.<\/span><\/p>\n<figure id=\"attachment_13423\" aria-describedby=\"caption-attachment-13423\" style=\"width: 733px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13423\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1-733x400.jpg\" alt=\"\" width=\"733\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1-733x400.jpg 733w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1-1400x764.jpg 1400w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1-768x419.jpg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1-18x10.jpg 18w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1-600x327.jpg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-1.jpg 1408w\" sizes=\"(max-width: 733px) 100vw, 733px\" \/><figcaption id=\"caption-attachment-13423\" class=\"wp-caption-text\">Gi\u1ea3i \u0111\u00e1p chi ti\u1ebft: Acid Salicylic l\u00e0 g\u00ec? BHA l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h3><b><i>1.1. Acid Salicylic l\u00e0 g\u00ec?<\/i><\/b><\/h3>\n<p><b>Acid Salicylic<\/b><span style=\"font-weight: 400;\"> (hay c\u00f2n g\u1ecdi l\u00e0 Salicylic Acid) l\u00e0 m\u1ed9t lo\u1ea1i acid v\u00f4 c\u01a1 thu\u1ed9c nh\u00f3m Beta Hydroxy Acid (BHA). Trong t\u1ef1 nhi\u00ean, ho\u1ea1t ch\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c chi\u1ebft xu\u1ea5t ch\u1ee7 y\u1ebfu t\u1eeb v\u1ecf c\u1ee7a c\u00e2y li\u1ec5u tr\u1eafng (Willow Bark), l\u00e1 l\u1ed9c \u0111\u1ec1 xanh (Wintergreen leaves) v\u00e0 v\u1ecf c\u00e2y b\u1ea1ch d\u01b0\u01a1ng ng\u1ecdt (Sweet Birch).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trong ng\u00e0nh m\u1ef9 ph\u1ea9m v\u00e0 da li\u1ec5u, Salicylic Acid \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 m\u1ed9t th\u00e0nh ph\u1ea7n t\u1ea9y t\u1ebf b\u00e0o ch\u1ebft h\u00f3a h\u1ecdc c\u00f3 kh\u1ea3 n\u0103ng tan trong d\u1ea7u. Nh\u1edd \u0111\u1eb7c t\u00ednh n\u00e0y, n\u00f3 kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t da m\u00e0 c\u00f2n c\u00f3 th\u1ec3 th\u00e2m nh\u1eadp s\u00e2u v\u00e0o c\u00e1c t\u1ea7ng c\u1ee7a l\u1ed7 ch\u00e2n l\u00f4ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 t\u1eeb g\u1ed1c r\u1ec5.<\/span><\/p>\n<h3><b><i>1.2. BHA l\u00e0 g\u00ec? S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa BHA v\u00e0 AHA<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Khi t\u00ecm hi\u1ec3u v\u1ec1 m\u1ef9 ph\u1ea9m, b\u1ea1n th\u01b0\u1eddng th\u1ea5y BHA v\u00e0 Salicylic Acid \u0111\u01b0\u1ee3c d\u00f9ng thay th\u1ebf cho nhau. Th\u1ef1c ch\u1ea5t, BHA (Beta Hydroxy Acid) l\u00e0 t\u00ean c\u1ee7a nh\u00f3m acid, v\u00e0 Salicylic Acid l\u00e0 d\u1ea1ng BHA ph\u1ed5 bi\u1ebfn nh\u1ea5t, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong m\u1ef9 ph\u1ea9m hi\u1ec7n nay. Do \u0111\u00f3, khi nh\u1eafc \u0111\u1ebfn BHA trong skincare, ng\u01b0\u1eddi ta m\u1eb7c \u0111\u1ecbnh \u0111ang n\u00f3i v\u1ec1 Salicylic Acid.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110i\u1ec3m kh\u00e1c bi\u1ec7t l\u1edbn nh\u1ea5t l\u00e0m n\u00ean t\u00ean tu\u1ed5i c\u1ee7a BHA ch\u00ednh l\u00e0 &#8220;kh\u1ea3 n\u0103ng h\u00f2a tan trong lipid (d\u1ea7u)&#8221;.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>AHA (Alpha Hydroxy Acid):<\/b><span style=\"font-weight: 400;\"> L\u00e0 acid tan trong n\u01b0\u1edbc, ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 tr\u00ean l\u1edbp s\u1eebng ngo\u00e0i c\u00f9ng c\u1ee7a b\u1ec1 m\u1eb7t da, ph\u00f9 h\u1ee3p v\u1edbi da kh\u00f4, da l\u00e3o h\u00f3a, da kh\u00f4ng \u0111\u1ec1u m\u00e0u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>BHA (Salicylic Acid):<\/b><span style=\"font-weight: 400;\"> L\u00e0 acid tan trong d\u1ea7u. N\u00f3 c\u00f3 th\u1ec3 xuy\u00ean qua l\u1edbp b\u00e3 nh\u1eddn \u0111ang t\u1eafc ngh\u1ebdn, \u0111i s\u00e2u v\u00e0o nang l\u00f4ng \u0111\u1ec3 l\u00e0m s\u1ea1ch, r\u1ea5t ph\u00f9 h\u1ee3p cho da d\u1ea7u, da h\u1ed7n h\u1ee3p thi\u00ean d\u1ea7u v\u00e0 da d\u1ec5 n\u1ed5i m\u1ee5n.<\/span><\/li>\n<\/ul>\n<h2><b>2. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Salicylic Acid tr\u00ean l\u00e0n da<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Hi\u1ec3u \u0111\u01b0\u1ee3c c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng s\u1ebd gi\u00fap b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c v\u00ec sao <\/span><b>Salicylic Acid tr\u1ecb m\u1ee5n<\/b><span style=\"font-weight: 400;\"> l\u1ea1i mang \u0111\u1ebfn hi\u1ec7u qu\u1ea3 v\u01b0\u1ee3t tr\u1ed9i \u0111\u1ebfn v\u1eady.<\/span><\/p>\n<figure id=\"attachment_13526\" aria-describedby=\"caption-attachment-13526\" style=\"width: 400px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13526\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-400x400.jpeg\" alt=\"\" width=\"400\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-400x400.jpeg 400w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-800x800.jpeg 800w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-280x280.jpeg 280w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-768x768.jpeg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-12x12.jpeg 12w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-600x600.jpeg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6-100x100.jpeg 100w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-6.jpeg 900w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption id=\"caption-attachment-13526\" class=\"wp-caption-text\">C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Salicylic Acid tr\u00ean l\u00e0n da<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Khi b\u1ea1n thoa s\u1ea3n ph\u1ea9m ch\u1ee9a BHA l\u00ean da, ho\u1ea1t ch\u1ea5t n\u00e0y s\u1ebd b\u1eaft \u0111\u1ea7u th\u1ef1c hi\u1ec7n hai nhi\u1ec7m v\u1ee5 song song:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1ee9 nh\u1ea5t, n\u1edbi l\u1ecfng li\u00ean k\u1ebft t\u1ebf b\u00e0o (T\u1ea9y da ch\u1ebft):<\/b><span style=\"font-weight: 400;\"> Salicylic Acid ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e1 v\u1ee1 c\u00e1c li\u00ean k\u1ebft gi\u1eefa c\u00e1c t\u1ebf b\u00e0o ch\u1ebft (desmosomes), gi\u00fap ch\u00fang d\u1ec5 d\u00e0ng bong tr\u00f3c kh\u1ecfi b\u1ec1 m\u1eb7t da m\u1ed9t c\u00e1ch nh\u1eb9 nh\u00e0ng m\u00e0 kh\u00f4ng c\u1ea7n ch\u00e0 x\u00e1t v\u1eadt l\u00fd g\u00e2y t\u1ed5n th\u01b0\u01a1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1ee9 hai, l\u00e0m s\u1ea1ch s\u00e2u l\u1ed7 ch\u00e2n l\u00f4ng (H\u00f2a tan b\u00e3 nh\u1eddn):<\/b><span style=\"font-weight: 400;\"> Nh\u1edd kh\u1ea3 n\u0103ng tan trong d\u1ea7u, BHA len l\u1ecfi qua l\u1edbp b\u00e3 nh\u1eddn, \u0111i s\u00e2u v\u00e0o l\u1ed7 ch\u00e2n l\u00f4ng. T\u1ea1i \u0111\u00e2y, n\u00f3 h\u00f2a tan c\u00e1c c\u1ee5c b\u00e3 nh\u1eddn (sebum), b\u1ee5i b\u1ea9n, c\u1eb7n trang \u0111i\u1ec3m v\u00e0 t\u1ebf b\u00e0o ch\u1ebft \u0111ang b\u1ecb k\u1eb9t l\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u00fap l\u1ed7 ch\u00e2n l\u00f4ng tr\u1edf n\u00ean th\u00f4ng tho\u00e1ng, tri\u1ec7t ti\u00eau m\u00f4i tr\u01b0\u1eddng y\u1ebfm kh\u00ed m\u00e0 vi khu\u1ea9n P. Acnes (vi khu\u1ea9n g\u00e2y m\u1ee5n) v\u00f4 c\u00f9ng y\u00eau th\u00edch.<\/span><\/li>\n<\/ul>\n<h2><b>3. Top 5 C\u00f4ng d\u1ee5ng Acid Salicylic tuy\u1ec7t v\u1eddi cho l\u00e0n da<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean m\u00e0 Salicylic Acid \u0111\u01b0\u1ee3c c\u00e1c b\u00e1c s\u0129 da li\u1ec5u khuy\u00ean d\u00f9ng trong h\u1ea7u h\u1ebft c\u00e1c ph\u00e1c \u0111\u1ed3 \u0111i\u1ec1u tr\u1ecb da li\u1ec5u. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng <\/span><b>c\u00f4ng d\u1ee5ng Acid Salicylic<\/b><span style=\"font-weight: 400;\"> n\u1ed5i b\u1eadt nh\u1ea5t:<\/span><\/p>\n<figure id=\"attachment_13524\" aria-describedby=\"caption-attachment-13524\" style=\"width: 733px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13524\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1-733x400.jpg\" alt=\"\" width=\"733\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1-733x400.jpg 733w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1-1400x764.jpg 1400w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1-768x419.jpg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1-18x10.jpg 18w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1-600x327.jpg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1.jpg 1408w\" sizes=\"(max-width: 733px) 100vw, 733px\" \/><figcaption id=\"caption-attachment-13524\" class=\"wp-caption-text\">C\u00f4ng d\u1ee5ng Acid Salicylic tuy\u1ec7t v\u1eddi cho l\u00e0n da<\/figcaption><\/figure>\n<h3><b><i>3.1. Salicylic Acid tr\u1ecb m\u1ee5n chuy\u00ean s\u00e2u v\u00e0 t\u1eadn g\u1ed1c<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 c\u00f4ng d\u1ee5ng l\u00e0m n\u00ean t\u00ean tu\u1ed5i c\u1ee7a ho\u1ea1t ch\u1ea5t n\u00e0y. B\u1eb1ng c\u00e1ch d\u1ecdn d\u1eb9p s\u1ea1ch s\u1ebd &#8220;b\u00e3i r\u00e1c&#8221; trong l\u1ed7 ch\u00e2n l\u00f4ng, BHA lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n nguy\u00ean nh\u00e2n h\u00ecnh th\u00e0nh m\u1ee5n.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1eb7c bi\u1ec7t, Salicylic Acid tr\u1ecb m\u1ee5n c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i m\u1ee5n kh\u00f4ng vi\u00eam nh\u01b0: m\u1ee5n \u0111\u1ea7u \u0111en, m\u1ee5n \u0111\u1ea7u tr\u1eafng, m\u1ee5n c\u00e1m v\u00e0 m\u1ee5n \u1ea9n. H\u01a1n th\u1ebf n\u1eefa, \u0111\u1eb7c t\u00ednh kh\u00e1ng vi\u00eam t\u1ef1 nhi\u00ean c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb v\u1ecf c\u00e2y li\u1ec5u gi\u00fap BHA l\u00e0m d\u1ecbu nhanh ch\u00f3ng c\u00e1c n\u1ed1t m\u1ee5n s\u01b0ng \u0111\u1ecf, m\u1ee5n b\u1ecdc, gi\u1ea3m t\u00ecnh tr\u1ea1ng t\u1ea5y \u0111\u1ecf v\u00e0 \u0111au nh\u1ee9c.<\/span><\/p>\n<h3><b><i>3.2. BHA cho da d\u1ea7u: Gi\u1ea3i ph\u00e1p ki\u1ec3m so\u00e1t b\u00e3 nh\u1eddn t\u1ed1i \u01b0u<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">N\u1ebfu b\u1ea1n s\u1edf h\u1eefu l\u00e0n da &#8220;b\u00f3ng l\u01b0\u1ee1ng&#8221; nh\u01b0 ch\u1ea3o d\u1ea7u m\u1ed7i khi th\u1ee9c d\u1eady hay v\u00e0o gi\u1eefa ng\u00e0y, BHA ch\u00ednh l\u00e0 v\u1ecb c\u1ee9u tinh. Vi\u1ec7c s\u1eed d\u1ee5ng <\/span><b>BHA cho da d\u1ea7u<\/b><span style=\"font-weight: 400;\"> gi\u00fap \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng c\u1ee7a tuy\u1ebfn b\u00e3 nh\u1eddn. L\u00e0n da s\u1ebd d\u1ea7n \u0111\u1ea1t \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng l\u01b0\u1ee3ng d\u1ea7u &#8211; n\u01b0\u1edbc l\u00fd t\u01b0\u1edfng.<\/span><\/p>\n<h3><b><i>3.3. T\u1ea9y t\u1ebf b\u00e0o ch\u1ebft nh\u1eb9 nh\u00e0ng, c\u1ea3i thi\u1ec7n k\u1ebft c\u1ea5u da<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Vi\u1ec7c t\u1ea9y da ch\u1ebft v\u1eadt l\u00fd b\u1eb1ng h\u1ea1t (scrub) c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng v\u1ebft x\u01b0\u1edbc vi th\u1ec3, l\u00e0m t\u1ed5n th\u01b0\u01a1ng h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 da. Salicylic Acid l\u00e0 gi\u1ea3i ph\u00e1p t\u1ea9y da ch\u1ebft h\u00f3a h\u1ecdc \u00eam \u00e1i h\u01a1n r\u1ea5t nhi\u1ec1u. S\u1eed d\u1ee5ng \u0111\u1ec1u \u0111\u1eb7n gi\u00fap b\u1ec1 m\u1eb7t da tr\u1edf n\u00ean l\u00e1ng m\u1ecbn, gi\u1ea3m t\u00ecnh tr\u1ea1ng s\u1ea7n s\u00f9i, th\u00f4 r\u00e1p, tr\u1ea3 l\u1ea1i cho b\u1ea1n l\u00e0n da m\u1ec1m m\u1ea1i nh\u01b0 l\u1ee5a.<\/span><\/p>\n<h3><b><i>3.4. H\u1ed7 tr\u1ee3 thu nh\u1ecf k\u00edch th\u01b0\u1edbc l\u1ed7 ch\u00e2n l\u00f4ng<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Th\u1ef1c t\u1ebf, kh\u00f4ng c\u00f3 s\u1ea3n ph\u1ea9m n\u00e0o c\u00f3 th\u1ec3 l\u00e0m l\u1ed7 ch\u00e2n l\u00f4ng bi\u1ebfn m\u1ea5t ho\u00e0n to\u00e0n. Tuy nhi\u00ean, khi l\u1ed7 ch\u00e2n l\u00f4ng ch\u1ee9a \u0111\u1ea7y b\u00e3 nh\u1eddn v\u00e0 t\u1ebf b\u00e0o ch\u1ebft, ch\u00fang s\u1ebd b\u1ecb k\u00e9o d\u00e3n v\u00e0 tr\u00f4ng to h\u01a1n b\u00ecnh th\u01b0\u1eddng. C\u00f4ng d\u1ee5ng Acid Salicylic l\u00e0 t\u1ed1ng kh\u1ee9 c\u00e1c t\u1ea1p ch\u1ea5t n\u00e0y ra ngo\u00e0i. Khi l\u1ed7 ch\u00e2n l\u00f4ng s\u1ea1ch s\u1ebd v\u00e0 \u0111\u00e0n h\u1ed3i t\u1ed1t tr\u1edf l\u1ea1i, ch\u00fang s\u1ebd t\u1ef1 \u0111\u1ed9ng se kh\u00edt l\u1ea1i v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c, gi\u00fap b\u1ec1 m\u1eb7t da m\u1ecbn m\u00e0ng h\u01a1n.<\/span><\/p>\n<h3><b><i>3.5. L\u00e0m m\u1edd th\u00e2m m\u1ee5n v\u00e0 k\u00edch th\u00edch s\u1ea3n sinh t\u1ebf b\u00e0o m\u1edbi<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Nh\u1edd qu\u00e1 tr\u00ecnh th\u00fac \u0111\u1ea9y l\u1edbp s\u1eebng gi\u00e0 c\u1ed7i bong ra nhanh h\u01a1n, BHA v\u00f4 t\u00ecnh c\u0169ng cu\u1ed1n theo nh\u1eefng t\u1ebf b\u00e0o ch\u1ee9a h\u1eafc s\u1eafc t\u1ed1 (melanin) tr\u00ean b\u1ec1 m\u1eb7t. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c v\u1ebft th\u00e2m sau m\u1ee5n m\u1edd \u0111i nhanh ch\u00f3ng. \u0110\u1ed3ng th\u1eddi, qu\u00e1 tr\u00ecnh t\u00e1i t\u1ea1o t\u1ebf b\u00e0o m\u1edbi (cell turnover) \u0111\u01b0\u1ee3c k\u00edch th\u00edch, gi\u00fap l\u00e0n da tr\u00f4ng s\u00e1ng v\u00e0 \u0111\u1ec1u m\u00e0u h\u01a1n.<\/span><\/p>\n<h2><b>4. N\u1ed3ng \u0111\u1ed9 BHA bao nhi\u00eau l\u00e0 ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng lo\u1ea1i da?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Hi\u1ec7u qu\u1ea3 c\u1ee7a Salicylic Acid ph\u1ee5 thu\u1ed9c r\u1ea5t l\u1edbn v\u00e0o n\u1ed3ng \u0111\u1ed9 v\u00e0 \u0111\u1ed9 pH c\u1ee7a s\u1ea3n ph\u1ea9m (pH l\u00fd t\u01b0\u1edfng \u0111\u1ec3 BHA ho\u1ea1t \u0111\u1ed9ng l\u00e0 t\u1eeb 3.0 \u0111\u1ebfn 4.0). V\u1eady <\/span><b>n\u1ed3ng \u0111\u1ed9 BHA bao nhi\u00eau l\u00e0 ph\u00f9 h\u1ee3p<\/b><span style=\"font-weight: 400;\"> cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u v\u00e0 cho t\u1eebng t\u00ecnh tr\u1ea1ng da?<\/span><\/p>\n<figure id=\"attachment_13597\" aria-describedby=\"caption-attachment-13597\" style=\"width: 733px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13597\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2-733x400.jpg\" alt=\"\" width=\"733\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2-733x400.jpg 733w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2-1400x764.jpg 1400w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2-768x419.jpg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2-18x10.jpg 18w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2-600x327.jpg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-2.jpg 1408w\" sizes=\"(max-width: 733px) 100vw, 733px\" \/><figcaption id=\"caption-attachment-13597\" class=\"wp-caption-text\">N\u1ed3ng \u0111\u1ed9 BHA bao nhi\u00eau l\u00e0 ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng lo\u1ea1i da<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>N\u1ed3ng \u0111\u1ed9 0.5% &#8211; 1%:<\/b><span style=\"font-weight: 400;\"> \u0110\u00e2y l\u00e0 m\u1ee9c n\u1ed3ng \u0111\u1ed9 l\u00fd t\u01b0\u1edfng nh\u1ea5t cho nh\u1eefng ng\u01b0\u1eddi c\u00f3 l\u00e0n da nh\u1ea1y c\u1ea3m ho\u1eb7c nh\u1eefng ai m\u1edbi l\u1ea7n \u0111\u1ea7u l\u00e0m quen v\u1edbi t\u1ea9y da ch\u1ebft h\u00f3a h\u1ecdc.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>N\u1ed3ng \u0111\u1ed9 2%:<\/b><span style=\"font-weight: 400;\"> \u0110\u00e2y l\u00e0 n\u1ed3ng \u0111\u1ed9 &#8220;v\u00e0ng&#8221; v\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t, mang l\u1ea1i hi\u1ec7u qu\u1ea3 tr\u1ecb m\u1ee5n \u1ea9n, m\u1ee5n \u0111\u1ea7u \u0111en v\u00e0 gi\u1ea3m ti\u1ebft d\u1ea7u r\u00f5 r\u1ec7t nh\u1ea5t.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>N\u1ed3ng \u0111\u1ed9 4% &#8211; 9%:<\/b><span style=\"font-weight: 400;\"> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u01b0\u1edbi d\u1ea1ng serum \u0111\u1eb7c tr\u1ecb d\u00f9ng ch\u1ea5m tr\u1ef1c ti\u1ebfp l\u00ean n\u1ed1t m\u1ee5n s\u01b0ng vi\u00eam l\u1edbn (spot treatment). N\u1ed3ng \u0111\u1ed9 n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c thoa to\u00e0n m\u1eb7t \u0111\u1ec3 tr\u00e1nh bong tr\u00f3c da nghi\u00eam tr\u1ecdng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>N\u1ed3ng \u0111\u1ed9 10% &#8211; 30%:<\/b><span style=\"font-weight: 400;\"> \u0110\u00e2y l\u00e0 n\u1ed3ng \u0111\u1ed9 d\u00f9ng trong th\u1ee7 thu\u1eadt Peel da sinh h\u1ecdc (Chemical Peel). Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng t\u1ef1 \u00fd mua v\u00e0 s\u1eed d\u1ee5ng t\u1ea1i nh\u00e0.\u00a0<\/span><\/li>\n<\/ul>\n<h2><b>5. H\u01b0\u1edbng d\u1eabn c\u00e1ch d\u00f9ng BHA (Salicylic Acid) chu\u1ea9n khoa h\u1ecdc cho ng\u01b0\u1eddi m\u1edbi<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng sai c\u00e1ch kh\u00f4ng nh\u1eefng kh\u00f4ng mang l\u1ea1i t\u00e1c d\u1ee5ng m\u00e0 c\u00f2n khi\u1ebfn da b\u1ea1n &#8220;breakout&#8221; (n\u1ed5i m\u1ee5n \u1ed3 \u1ea1t) v\u00e0 t\u1ed5n th\u01b0\u01a1ng h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 <\/span><b>c\u00e1ch d\u00f9ng BHA<\/b><span style=\"font-weight: 400;\"> chu\u1ea9n x\u00e1c nh\u1ea5t t\u1eeb chuy\u00ean gia:<\/span><\/p>\n<figure id=\"attachment_13525\" aria-describedby=\"caption-attachment-13525\" style=\"width: 733px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13525\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2-733x400.jpg\" alt=\"\" width=\"733\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2-733x400.jpg 733w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2-1400x764.jpg 1400w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2-768x419.jpg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2-18x10.jpg 18w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2-600x327.jpg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-2.jpg 1408w\" sizes=\"(max-width: 733px) 100vw, 733px\" \/><figcaption id=\"caption-attachment-13525\" class=\"wp-caption-text\">H\u01b0\u1edbng d\u1eabn c\u00e1ch d\u00f9ng BHA (Salicylic Acid) chu\u1ea9n khoa h\u1ecdc cho ng\u01b0\u1eddi m\u1edbi<\/figcaption><\/figure>\n<h3><b><i>B\u01b0\u1edbc 1: L\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m v\u00e0 Test th\u1eed (Patch Test)<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Tr\u01b0\u1edbc khi thoa l\u00ean to\u00e0n m\u1eb7t, h\u00e3y l\u1ea5y m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf s\u1ea3n ph\u1ea9m thoa l\u00ean v\u00f9ng da d\u01b0\u1edbi quai h\u00e0m ho\u1eb7c c\u1ed5 tay. Ch\u1edd 24-48 gi\u1edd \u0111\u1ec3 xem da c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng m\u1ea9n \u0111\u1ecf, ng\u1ee9a ng\u00e1y d\u1eef d\u1ed9i hay kh\u00f4ng. N\u1ebfu ch\u1ec9 ch\u00e2m ch\u00edch nh\u1eb9 trong v\u00e0i ph\u00fat \u0111\u1ea7u th\u00ec \u0111\u00f3 l\u00e0 ph\u1ea3n \u1ee9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a acid.<\/span><\/p>\n<h3><b><i>B\u01b0\u1edbc 2: Thi\u1ebft l\u1eadp th\u1ee9 t\u1ef1 trong chu tr\u00ecnh Skincare<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Quy t\u1eafc chung l\u00e0: <\/span><b>L\u1ecfng tr\u01b0\u1edbc &#8211; \u0110\u1eb7c sau, pH th\u1ea5p tr\u01b0\u1edbc &#8211; pH cao sau<\/b><span style=\"font-weight: 400;\">. Chu tr\u00ecnh c\u01a1 b\u1ea3n cho bu\u1ed5i t\u1ed1i nh\u01b0 sau:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u1ea9y trang v\u00e0 S\u1eefa r\u1eeda m\u1eb7t:<\/b><span style=\"font-weight: 400;\"> L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t da.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Toner (N\u01b0\u1edbc hoa h\u1ed3ng):<\/b><span style=\"font-weight: 400;\"> D\u00f9ng lo\u1ea1i toner c\u1ea5p \u1ea9m, c\u00e2n b\u1eb1ng pH (kh\u00f4ng ch\u1ee9a c\u1ed3n, kh\u00f4ng ch\u1ee9a th\u00eam acid).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>BHA (Salicylic Acid):<\/b><span style=\"font-weight: 400;\"> Thoa m\u1ed9t l\u1edbp m\u1ecfng BHA l\u00ean to\u00e0n b\u1ed9 khu\u00f4n m\u1eb7t ho\u1eb7c v\u00f9ng da b\u1ecb m\u1ee5n. <\/span><b>L\u01b0u \u00fd quan tr\u1ecdng:<\/b><span style=\"font-weight: 400;\"> H\u00e3y \u0111\u1ee3i kho\u1ea3ng 15 &#8211; 20 ph\u00fat \u0111\u1ec3 BHA ho\u1ea1t \u0111\u1ed9ng tr\u00ean da \u1edf m\u00f4i tr\u01b0\u1eddng pH th\u1ea5p r\u1ed3i m\u1edbi ti\u1ebfn h\u00e0nh c\u00e1c b\u01b0\u1edbc ti\u1ebfp theo.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Serum c\u1ea5p \u1ea9m\/ph\u1ee5c h\u1ed3i:<\/b><span style=\"font-weight: 400;\"> B\u1ed5 sung tinh ch\u1ea5t d\u01b0\u1ee1ng da.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Kem d\u01b0\u1ee1ng \u1ea9m:<\/b><span style=\"font-weight: 400;\"> B\u01b0\u1edbc b\u1eaft bu\u1ed9c \u0111\u1ec3 kh\u00f3a l\u1ea1i to\u00e0n b\u1ed9 d\u01b0\u1ee1ng ch\u1ea5t v\u00e0 ng\u0103n t\u00ecnh tr\u1ea1ng kh\u00f4 da do BHA g\u00e2y ra.<\/span><\/li>\n<\/ol>\n<h3><b><i>B\u01b0\u1edbc 3: T\u1ea7n su\u1ea5t s\u1eed d\u1ee5ng h\u1ee3p l\u00fd<\/i><\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Tu\u1ea7n 1-2:<\/b><span style=\"font-weight: 400;\"> Ch\u1ec9 d\u00f9ng 1 \u0111\u1ebfn 2 l\u1ea7n\/tu\u1ea7n \u0111\u1ec3 da t\u1eeb t\u1eeb l\u00e0m quen.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Tu\u1ea7n 3-4:<\/b><span style=\"font-weight: 400;\"> T\u0103ng l\u00ean 3 l\u1ea7n\/tu\u1ea7n, d\u00f9ng c\u00e1ch ng\u00e0y.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Sau 1 th\u00e1ng:<\/b><span style=\"font-weight: 400;\"> N\u1ebfu da kh\u1ecfe, kh\u00f4ng \u0111\u1ecf r\u00e1t, b\u1ea1n c\u00f3 th\u1ec3 duy tr\u00ec d\u00f9ng h\u00e0ng ng\u00e0y ho\u1eb7c c\u00e1ch ng\u00e0y t\u00f9y thu\u1ed9c v\u00e0o n\u1ed3ng \u0111\u1ed9 v\u00e0 t\u00ecnh tr\u1ea1ng da.<\/span><\/li>\n<\/ul>\n<h2><b>6. Nh\u1eefng l\u01b0u \u00fd &#8220;s\u1ed1ng c\u00f2n&#8221; khi s\u1eed d\u1ee5ng Salicylic Acid \u0111\u1ec3 tr\u00e1nh k\u00edch \u1ee9ng<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a <\/span><b>c\u00f4ng d\u1ee5ng Acid Salicylic<\/b><span style=\"font-weight: 400;\"> m\u00e0 kh\u00f4ng r\u01b0\u1edbc h\u1ecda v\u00e0o th\u00e2n, b\u1ea1n ph\u1ea3i thu\u1ed9c n\u1eb1m l\u00f2ng nh\u1eefng quy t\u1eafc sau:<\/span><\/p>\n<figure id=\"attachment_13523\" aria-describedby=\"caption-attachment-13523\" style=\"width: 612px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13523\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-612x400.jpg\" alt=\"\" width=\"612\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-612x400.jpg 612w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-1224x800.jpg 1224w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-768x502.jpg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-18x12.jpg 18w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1-600x392.jpg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/02\/my-pham-chua-Salicylic-Acid-1.jpg 1454w\" sizes=\"(max-width: 612px) 100vw, 612px\" \/><figcaption id=\"caption-attachment-13523\" class=\"wp-caption-text\">Nh\u1eefng l\u01b0u \u00fd &#8220;s\u1ed1ng c\u00f2n&#8221; khi s\u1eed d\u1ee5ng Salicylic Acid \u0111\u1ec3 tr\u00e1nh k\u00edch \u1ee9ng<\/figcaption><\/figure>\n<h3><b><i>6.1. B\u1eaft bu\u1ed9c ph\u1ea3i s\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">BHA lo\u1ea1i b\u1ecf l\u1edbp t\u1ebf b\u00e0o ch\u1ebft c\u0169, \u0111\u1ec3 l\u1ed9 ra l\u1edbp da non m\u1edbi r\u1ea5t d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng b\u1edfi tia UV. N\u1ebfu d\u00f9ng BHA m\u00e0 kh\u00f4ng ch\u1ed1ng n\u1eafng quang ph\u1ed5 r\u1ed9ng (SPF 30 tr\u1edf l\u00ean), da b\u1ea1n s\u1ebd s\u1ea1m \u0111i nhanh ch\u00f3ng v\u00e0 t\u00ecnh tr\u1ea1ng m\u1ee5n vi\u00eam c\u00f3 th\u1ec3 t\u1ec7 h\u01a1n do nhi\u1ec7t \u0111\u1ed9 t\u1eeb \u00e1nh n\u1eafng.<\/span><\/p>\n<h3><b><i>6.2. Ph\u00e2n bi\u1ec7t hi\u1ec7n t\u01b0\u1ee3ng Purging (\u0110\u1ea9y m\u1ee5n) v\u00e0 Breakout (D\u1ecb \u1ee9ng\/K\u00edch \u1ee9ng)<\/i><\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Purging:<\/b><span style=\"font-weight: 400;\"> Khi d\u00f9ng BHA, l\u1edbp s\u1eebng bong ra nhanh khi\u1ebfn c\u00e1c nh\u00e2n m\u1ee5n \u1ea9n s\u00e2u d\u01b0\u1edbi da b\u1ecb \u0111\u1ea9y l\u00ean b\u1ec1 m\u1eb7t. M\u1ee5n th\u01b0\u1eddng tr\u1ed3i l\u00ean \u1edf nh\u1eefng v\u00f9ng da b\u1ea1n hay b\u1ecb m\u1ee5n m\u1ecdc. Qu\u00e1 tr\u00ecnh n\u00e0y k\u00e9o d\u00e0i t\u1eeb 2 &#8211; 6 tu\u1ea7n. B\u1ea1n ch\u1ec9 c\u1ea7n ki\u00ean tr\u00ec, sau giai \u0111o\u1ea1n \u0111\u1ea9y m\u1ee5n, da s\u1ebd r\u1ea5t l\u00e1ng m\u1ecbn.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Breakout:<\/b><span style=\"font-weight: 400;\"> L\u00e0 khi da n\u1ed5i m\u1ee5n n\u01b0\u1edbc li ti, m\u1ee5n vi\u00eam s\u01b0ng \u0111\u1ecf \u1edf nh\u1eefng v\u00f9ng da tr\u01b0\u1edbc \u0111\u00e2y ch\u01b0a t\u1eebng n\u1ed5i m\u1ee5n, k\u00e8m theo ng\u1ee9a r\u00e1t k\u00e9o d\u00e0i. L\u00fac n\u00e0y, b\u1ea1n c\u1ea7n ng\u1eebng s\u1eed d\u1ee5ng ngay l\u1eadp t\u1ee9c v\u00ec da \u0111\u00e3 b\u1ecb k\u00edch \u1ee9ng.<\/span><\/li>\n<\/ul>\n<h3><b><i>6.3. C\u1ea9n tr\u1ecdng khi k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ho\u1ea1t ch\u1ea5t m\u1ea1nh kh\u00e1c<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Trong c\u00f9ng m\u1ed9t chu tr\u00ecnh (routine) bu\u1ed5i t\u1ed1i, <\/span><b>kh\u00f4ng n\u00ean<\/b><span style=\"font-weight: 400;\"> s\u1eed d\u1ee5ng BHA c\u00f9ng l\u00fac v\u1edbi Retinol, AHA, hay Vitamin C (L-AA) n\u1ebfu b\u1ea1n l\u00e0 ng\u01b0\u1eddi m\u1edbi. Vi\u1ec7c x\u1ebfp ch\u1ed3ng qu\u00e1 nhi\u1ec1u acid s\u1ebd ph\u00e1 h\u1ee7y l\u1edbp m\u00e0ng lipid b\u1ea3o v\u1ec7 da (Skin barrier), g\u00e2y \u0111\u1ecf r\u00e1t, bong tr\u00f3c n\u1ee9t n\u1ebb. Thay v\u00e0o \u0111\u00f3, h\u00e3y chia BHA d\u00f9ng bu\u1ed5i s\u00e1ng (nh\u1edb ch\u1ed1ng n\u1eafng k\u0129) v\u00e0 Retinol bu\u1ed5i t\u1ed1i, ho\u1eb7c d\u00f9ng xen k\u1ebd c\u00e1ch ng\u00e0y.<\/span><\/p>\n<h3><b><i>6.4. Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng b\u1ecf qua b\u01b0\u1edbc c\u1ea5p \u1ea9m, ph\u1ee5c h\u1ed3i<\/i><\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 nguy\u00ean t\u1eafc then ch\u1ed1t. \u0110\u1eb7c t\u00ednh c\u1ee7a Salicylic Acid l\u00e0 ki\u1ec1m d\u1ea7u, n\u00ean n\u00f3 s\u1ebd v\u00f4 t\u00ecnh l\u00e0m gi\u1ea3m l\u01b0\u1ee3ng \u1ea9m t\u1ef1 nhi\u00ean tr\u00ean b\u1ec1 m\u1eb7t da. Vi\u1ec7c da b\u1ecb kh\u00f4 c\u0103ng qu\u00e1 m\u1ee9c s\u1ebd k\u00edch ho\u1ea1t tuy\u1ebfn b\u00e3 nh\u1eddn ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh g\u1ea5p \u0111\u00f4i \u0111\u1ec3 b\u00f9 \u1ea9m, khi\u1ebfn t\u00ecnh tr\u1ea1ng \u0111\u1ed5 d\u1ea7u v\u00e0 m\u1ee5n t\u1ed3i t\u1ec7 h\u01a1n.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i cung c\u1ea5p m\u1ed9t l\u1edbp m\u00e0ng d\u01b0\u1ee1ng \u1ea9m v\u00e0 ph\u1ee5c h\u1ed3i chuy\u00ean s\u00e2u \u0111\u1ec3 c\u00e2n b\u1eb1ng l\u1ea1i l\u00e0n da sau khi thoa BHA.<\/span><\/p>\n<h2><b>7. T\u1ed1i \u01b0u hi\u1ec7u qu\u1ea3 BHA, ng\u1eeba k\u00edch \u1ee9ng c\u00f9ng m\u1ef9 ph\u1ea9m H\u00e0n Qu\u1ed1c KOR<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u1edf ph\u1ea7n l\u01b0u \u00fd, nh\u01b0\u1ee3c \u0111i\u1ec3m l\u1edbn nh\u1ea5t khi s\u1eed d\u1ee5ng <\/span><b>Salicylic Acid tr\u1ecb m\u1ee5n<\/b><span style=\"font-weight: 400;\"> l\u00e0 l\u00e0m da b\u1ecb m\u1ea5t n\u01b0\u1edbc, kh\u00f4 c\u0103ng, th\u1eadm ch\u00ed bong tr\u00f3c nh\u1eb9 n\u1ebfu d\u00f9ng n\u1ed3ng \u0111\u1ed9 cao.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 &#8220;h\u00f3a gi\u1ea3i&#8221; nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0y v\u00e0 n\u00e2ng t\u1ea7m hi\u1ec7u qu\u1ea3 ch\u0103m s\u00f3c da, vi\u1ec7c k\u1ebft h\u1ee3p BHA v\u1edbi c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m d\u01b0\u1ee1ng \u1ea9m, ph\u1ee5c h\u1ed3i s\u00e2u l\u00e0 v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft. Trong \u0111\u00f3, c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m t\u1eeb <\/span><b>th\u01b0\u01a1ng hi\u1ec7u m\u1ef9 ph\u1ea9m KOR (H\u00e0n Qu\u1ed1c)<\/b><span style=\"font-weight: 400;\"> ch\u00ednh l\u00e0 &#8220;ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh&#8221; ho\u00e0n h\u1ea3o nh\u1ea5t cho l\u00e0n da \u0111ang d\u00f9ng treatment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/korcosmetics.vn\/san-pham\/bo-cham-soc-da-chuyen-sau-cao-cap-han-quoc-kor\/\"><strong>M\u1ef9 ph\u1ea9m KOR<\/strong><\/a> n\u1ed5i ti\u1ebfng v\u1edbi tri\u1ebft l\u00fd nu\u00f4i d\u01b0\u1ee1ng v\u00e0 t\u00e1i t\u1ea1o l\u00e0n da t\u1eeb g\u1ed1c r\u1ec5, mang l\u1ea1i v\u1ebb \u0111\u1eb9p chu\u1ea9n H\u00e0n: c\u0103ng b\u00f3ng, m\u1ecbn m\u00e0ng v\u00e0 kh\u1ecfe m\u1ea1nh. Khi k\u1ebft h\u1ee3p chu tr\u00ecnh t\u1ea9y da ch\u1ebft b\u1eb1ng BHA v\u1edbi s\u1ee9c m\u1ea1nh ph\u1ee5c h\u1ed3i c\u1ee7a KOR, b\u1ea1n s\u1ebd t\u1ea1o ra m\u1ed9t h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 v\u1eefng ch\u1eafc.<\/span><\/p>\n<figure id=\"attachment_13422\" aria-describedby=\"caption-attachment-13422\" style=\"width: 400px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-13422\" src=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-400x400.jpg\" alt=\"\" width=\"400\" height=\"400\" srcset=\"https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-400x400.jpg 400w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-800x800.jpg 800w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-280x280.jpg 280w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-768x768.jpg 768w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-12x12.jpg 12w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-600x600.jpg 600w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi-100x100.jpg 100w, https:\/\/korcosmetics.vn\/wp-content\/uploads\/2026\/03\/Acid-Salicylic-la-gi.jpg 1024w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption id=\"caption-attachment-13422\" class=\"wp-caption-text\">T\u1ed1i \u01b0u hi\u1ec7u qu\u1ea3 BHA, ng\u1eeba k\u00edch \u1ee9ng c\u00f9ng m\u1ef9 ph\u1ea9m H\u00e0n Qu\u1ed1c KOR<\/figcaption><\/figure>\n<p><b>G\u1ee3i \u00fd chu tr\u00ecnh bu\u1ed5i t\u1ed1i ho\u00e0n h\u1ea3o cho da d\u1ea7u m\u1ee5n:<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ea9y trang -&gt; 2. S\u1eefa r\u1eeda m\u1eb7t -&gt; 3. Toner m\u1ecfng nh\u1eb9 -&gt; 4. <\/span><b>BHA (Salicylic Acid)<\/b><span style=\"font-weight: 400;\"> (Ch\u1edd 15 ph\u00fat) -&gt; 5. <\/span><b>KOR Supreme Facial Serum<\/b><span style=\"font-weight: 400;\"> (V\u1ed7 nh\u1eb9 th\u1ea5m \u0111\u1ec1u) -&gt; 6. Kh\u00f3a \u1ea9m b\u1eb1ng <\/span><b>KOR Supreme Facial Cream<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Ch\u1ec9 sau 3 &#8211; 4 tu\u1ea7n duy tr\u00ec chu tr\u00ecnh n\u00e0y, b\u1ea1n s\u1ebd ng\u1ea1c nhi\u00ean khi th\u1ea5y m\u1ee5n \u1ea9n \u0111\u01b0\u1ee3c \u0111\u1ea9y s\u1ea1ch, l\u1ed7 ch\u00e2n l\u00f4ng se kh\u00edt m\u00e0 n\u1ec1n da v\u1eabn c\u0103ng b\u00f3ng, ng\u1eadm n\u01b0\u1edbc v\u00e0 kh\u00f4ng h\u1ec1 c\u00f3 d\u1ea5u hi\u1ec7u m\u1ecfng y\u1ebfu hay nh\u1ea1y c\u1ea3m.<\/span><\/p>\n<h2><b>Conclusion<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ebfn \u0111\u00e2y, ch\u1eafc h\u1eb3n b\u1ea1n \u0111\u00e3 t\u00ecm \u0111\u01b0\u1ee3c c\u00e2u tr\u1ea3 l\u1eddi \u0111\u1ea7y \u0111\u1ee7 cho c\u00e2u h\u1ecfi <\/span><b>Acid Salicylic l\u00e0 g\u00ec<\/b><span style=\"font-weight: 400;\"> c\u0169ng nh\u01b0 hi\u1ec3u r\u00f5 v\u1ec1 nh\u00f3m <\/span><b>BHA l\u00e0 g\u00ec<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tuy nhi\u00ean, \u0111\u1eebng qu\u00ean r\u1eb1ng &#8220;chinh ph\u1ee5c&#8221; treatment l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh c\u1ea7n s\u1ef1 c\u00e2n b\u1eb1ng. Vi\u1ec7c s\u1eed d\u1ee5ng acid t\u1ea9y da ch\u1ebft ph\u1ea3i lu\u00f4n lu\u00f4n \u0111i \u0111\u00f4i v\u1edbi ph\u1ee5c h\u1ed3i v\u00e0 c\u1ea5p \u1ea9m chuy\u00ean s\u00e2u. KOR ch\u00fac b\u1ea1n \u00e1p d\u1ee5ng th\u00e0nh c\u00f4ng v\u00e0 s\u1edbm s\u1edf h\u1eefu l\u00e0n da nh\u01b0 \u00fd!<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>When hearing terms like \u201cchemical exfoliation\u201d or \u201cacne treatment,\u201d Salicylic Acid always holds a \u201cdominant\u201d position, especially for those with oily and acne-prone skin. So what exactly is Salicylic Acid? How is it different from other\u2026<\/p>","protected":false},"author":13,"featured_media":13423,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13421","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lam-dep-cung-kor"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Acid Salicylic l\u00e0 g\u00ec ? C\u00f4ng d\u1ee5ng v\u00e0 Nh\u1eefng l\u01b0u \u00fd khi s\u1eed d\u1ee5ng - KOR COSMETICS - M\u1ef9 ph\u1ea9m H\u00e0n Qu\u1ed1c ch\u00ednh h\u00e3ng<\/title>\n<meta name=\"description\" content=\"Acid Salicylic l\u00e0 g\u00ec? N\u00f3 kh\u00e1c bi\u1ec7t th\u1ebf n\u00e0o so v\u1edbi c\u00e1c lo\u1ea1i acid kh\u00e1c? 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