{"id":568,"date":"2021-06-03T11:35:50","date_gmt":"2021-06-03T04:35:50","guid":{"rendered":"https:\/\/hdclinic.vn\/?p=568"},"modified":"2021-07-02T00:10:23","modified_gmt":"2021-07-01T17:10:23","slug":"tim-hieu-ve-kem-chong-nang","status":"publish","type":"post","link":"https:\/\/hdclinic.vn\/?p=568","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 kem ch\u1ed1ng n\u1eafng"},"content":{"rendered":"\n<h3>V\u00ec sao ph\u1ea3i ch\u1ed1ng n\u1eafng?<\/h3>\n<p>\u00c1nh s\u00e1ng m\u1eb7t tr\u1eddi mang l\u1ea1i cho ch\u00fang ta r\u1ea5t nhi\u1ec1u l\u1ee3i \u00edch. T\u1eeb vi\u1ec7c cung c\u1ea5p \u00e1nh s\u00e1ng \u0111\u1ec3 ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn nh\u1eadn \u0111\u01b0\u1ee3c m\u1ecdi v\u1eadt hay gi\u00fap c\u01a1 th\u1ec3 t\u1ed5ng h\u1ee3p Vitamin D- m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong h\u1ea5p thu canxi gi\u00fap x\u01b0\u01a1ng ch\u1eafc kh\u1ecfe c\u0169ng nh\u01b0 v\u00f4 v\u00e0n c\u00e1c t\u00e1c d\u1ee5ng kh\u00e1c. Tuy nhi\u00ean, c\u00f9ng v\u1edbi l\u1ee3i \u00edch m\u00e0 \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi \u0111em l\u1ea1i th\u00ec b\u1ea3n th\u00e2n ch\u00fang c\u00f3 ch\u1ee9a nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi n\u00f3i chung v\u00e0 c\u1ee5 th\u1ec3 tr\u00ean l\u00e0n da c\u1ee7a ch\u00fang ta n\u00f3i ri\u00eang. M\u1ed9t trong s\u1ed1 \u0111\u00f3 ph\u1ea3i k\u1ec3 \u0111\u1ebfn l\u00e0 tia c\u1ef1c t\u00edm (Ultraviolet- UV) m\u00e0 m\u1eaft th\u01b0\u1eddng ch\u00fang ta kh\u00f4ng th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c.<\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-668 aligncenter\" src=\"http:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/unnamed-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/unnamed-300x169.jpg 300w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/unnamed-510x287.jpg 510w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/unnamed.jpg 512w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h3>V\u1eady tia c\u1ef1c t\u00edm g\u00e2y h\u1ea1i v\u1edbi l\u00e0 da nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>Tia UV g\u1ed3m c\u00f3 UVA, UVB, v\u00e0 UVC. UVC th\u00ec \u0111\u01b0\u1ee3c t\u1ea7ng Ozone h\u1ea5p th\u1ee5 g\u1ea7n nh\u01b0 tuy\u1ec7t \u0111\u1ed1i, do \u0111\u00f3 ch\u1ee7 y\u1ebfu ch\u00fang ta th\u01b0\u1eddng xuy\u00ean ti\u1ebfp x\u00fac l\u00e0 UVA v\u00e0 UVB.\u00a0 \u0110\u00e2y l\u00e0 hai lo\u1ea1i tia c\u00f3 vai tr\u00f2 ch\u00ednh trong vi\u1ec7c g\u00e2y ra m\u1ed9t s\u1ed1 t\u00ecnh tr\u1ea1ng nh\u01b0 b\u1ecfng n\u1eafng, l\u00e3o h\u00f3a da v\u00e0 ung th\u01b0 da. \u0110\u1ec3 hi\u1ec3u th\u00eam v\u1ec1 c\u00e1ch kem ch\u1ed1ng n\u1eafng ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o m\u00e0 c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf t\u00ecnh tr\u1ea1ng n\u00e0y th\u00ec ch\u00fang ta s\u1ebd xem x\u00e9t m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a hai lo\u1ea1i tia tr\u00ean nh\u00e9.<\/p>\n\t<section class=\"section\" id=\"section_1953050299\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-408095937\">\n\n\n\t<div id=\"col-1361314337\" class=\"col medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p style=\"text-align: center;\"><strong>UVB<\/strong><\/p>\n<ul>\n<li>B\u01b0\u1edbc s\u00f3ng 290-320nm<\/li>\n<li>H\u1ea7u h\u1ebft \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 b\u1edfi t\u1ea7ng Ozone nh\u01b0ng do t\u1ea7ng Ozone ng\u00e0y nay b\u1ecb th\u1ee7ng n\u00ean l\u01b0\u1ee3ng UVB ng\u00e0y c\u00e0ng tr\u1edf l\u00ean nhi\u1ec1u h\u01a1n<\/li>\n<li>C\u01b0\u1eddng \u0111\u1ed9 kh\u00e1c nhau t\u00f9y theo m\u00f9a, v\u1ecb tr\u00ed v\u00e0 th\u1eddi gian nh\u01b0ng m\u1ea1nh nh\u1eadt l\u00e0 v\u00e0o m\u00f9a h\u00e8 t\u1eeb 10 gi\u1edd s\u00e1ng \u0111\u1ebfn 4 gi\u1edd chi\u1ec1u<\/li>\n<li>\u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ecf da v\u00e0 b\u1ecfng n\u1eafng<\/li>\n<li>Ph\u01a1i nhi\u1ec5m v\u1edbi UVB m\u1ed7i ng\u00e0y t\u1eeb 20-30 ph\u00fat r\u1ea5t c\u00f3 l\u1ee3i cho t\u1ed5ng h\u1ee3p vitamin D3 v\u00e0 mi\u1ec5n d\u1ecbch tr\u00ean da<\/li>\n<\/ul>\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1368427063\" class=\"col medium-6 small-12 large-6\"  >\n\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p style=\"text-align: center;\"><strong>UVA<\/strong><\/p>\n<ul>\n<li>B\u01b0\u1edbc s\u00f3ng t\u1eeb 320-400nm bao g\u1ed3m UVA I 340-400nm v\u00e0 UVA II 320-340nm<\/li>\n<li>\u01af\u1edbc t\u00ednh \u0111\u1ebfn 95% l\u01b0\u1ee3ng tia t\u1eed ngo\u1ea1i t\u1eeb m\u1eb7t tr\u1eddi chi\u1ebfu xu\u1ed1ng b\u1ec1 m\u1eb7t tr\u00e1i \u0111\u1ea5t<\/li>\n<li>C\u01b0\u1eddng \u0111\u1ed9 kh\u00e1 \u0111\u1ec1u t\u1ea5t c\u1ea3 th\u1eddi gian trong n\u0103m<\/li>\n<li>Kh\u1ea3 n\u0103ng xuy\u00ean m\u00e2y v\u00e0 k\u00ednh<\/li>\n<li>Xuy\u00ean qua da s\u00e2u h\u01a1n UVB v\u00e0 g\u00e2y h\u1ea1i cho t\u1ebf b\u00e0o da \u1edf l\u1edbp \u0111\u00e1y.<\/li>\n<li>L\u00e0m da t\u1ed1i m\u00e0u v\u00e0 t\u1ed5n h\u1ea1i v\u1eadt ch\u1ea5t di truy\u1ec1n tr\u00ean da<\/li>\n<li>G\u00f3p ph\u1ea7n l\u1edbn v\u00e0 kh\u1edfi ph\u00e1t ung th\u01b0 da<\/li>\n<li>B\u1ed5 sung h\u1ec7 mi\u1ec5n d\u1ecbch tr\u00ean da<\/li>\n<\/ul>\n\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1953050299 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n<p>T\u1eeb nh\u1eefng th\u00f4ng tin tr\u00ean c\u00f3 th\u1ec3 th\u1ea5y nh\u1eefng t\u00e1c h\u1ea1i m\u00e0 \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi t\u00e1c \u0111\u1ed9ng l\u00ean l\u00e0n da, ch\u00ednh v\u00ec th\u1ebf vi\u1ec7c b\u1ea3o v\u1ec7 da ch\u1ed1ng l\u1ea1i c\u00e1c t\u00e1c nh\u00e2n UVA v\u00e0 UVB l\u00e0 h\u1ebft s\u1ee9c c\u1ea7n thi\u1ebft. Vi\u1ec7c ch\u1ed1ng n\u1eafng c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau nh\u01b0 m\u1eb7c \u0111\u1ed3 che ch\u1eafn, m\u0169, qu\u1ea7n \u00e1o ch\u1ed1ng n\u1eafng\u2026 nh\u01b0ng hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u01a1n gi\u1ea3n h\u01a1n c\u1ea3 l\u00e0 s\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng. V\u1eady kem ch\u1ed1ng n\u1eafng l\u00e0 g\u00ec v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng ra sao?<\/p>\n<h3>Ph\u00e2n lo\u1ea1i kem ch\u1ed1ng n\u1eafng<\/h3>\n<p><img decoding=\"async\" class=\" wp-image-669 aligncenter\" src=\"http:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/80797158-chemical-sunscreen-and-physical-sunscreen-300x162.jpg\" alt=\"\" width=\"374\" height=\"202\" srcset=\"https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/80797158-chemical-sunscreen-and-physical-sunscreen-300x162.jpg 300w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/80797158-chemical-sunscreen-and-physical-sunscreen-1024x555.jpg 1024w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/80797158-chemical-sunscreen-and-physical-sunscreen-768x416.jpg 768w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/80797158-chemical-sunscreen-and-physical-sunscreen-510x276.jpg 510w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/80797158-chemical-sunscreen-and-physical-sunscreen.jpg 1300w\" sizes=\"(max-width: 374px) 100vw, 374px\" \/><\/p>\n<ul>\n<li>Theo c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng: Kem ch\u1ed1ng n\u1eafng \u0111\u01b0\u1ee3c chia l\u00e0m 2 lo\u1ea1i g\u1ed3m kem ch\u1ed1ng n\u1eafng h\u00f3a h\u1ecdc v\u00e0 kem ch\u1ed1ng n\u1eafng v\u1eadt l\u00fd.<\/li>\n<\/ul>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B\u1ea3n ch\u1ea5t kem ch\u1ed1ng n\u1eafng h\u00f3a h\u1ecdc (sunscreen) l\u00e0 th\u00e0nh ph\u1ea7n ch\u1ee9a c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc h\u1eefu c\u01a1 nh\u01b0 avobenzone, oxybenzone, sulisobenzone\u2026 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t m\u00e0ng l\u1ecdc h\u00f3a h\u1ecdc b\u1eb1ng c\u00e1ch h\u1ea5p thu, x\u1eed l\u00fd v\u00e0 ph\u00e2n h\u1ee7y tia UV tr\u01b0\u1edbc khi ch\u00fang c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn da. \u01afu \u0111i\u1ec3m c\u1ee7a lo\u1ea1i n\u00e0y \u0111\u00f3 l\u00e0 c\u00f3 k\u1ebft c\u1ea5u m\u1ecfng nh\u1eb9, \u00edt nh\u1eddn v\u00e0 \u00edt g\u00e2y b\u00edt t\u1eafc l\u1ed7 ch\u00e2n l\u00f4ng. Th\u00eam v\u00e0o \u0111\u00f3 l\u00e0 th\u00e0nh ph\u1ea7n gi\u1eef \u1ea9m n\u00ean c\u00f3 th\u1ec3 d\u00f9ng nh\u01b0 m\u1ed9t d\u1ea1ng kem l\u00f3t khi trang \u0111i\u1ec3m. Lo\u1ea1i n\u00e0y c\u0169ng \u0111a d\u1ea1ng v\u1ec1 m\u1ee9c \u0111\u1ed9 ch\u1ed1ng n\u1eafng v\u00e0 d\u1ea1ng b\u00e0o ch\u1ebf n\u00ean \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng v\u00e0 m\u1ee9c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau. Tuy nhi\u00ean, v\u00ec l\u00e0 h\u00f3a h\u1ecdc n\u00ean c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y k\u00edch \u1ee9ng da, t\u00ednh b\u1ec1n v\u1eefng k\u00e9m n\u00ean c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n b\u00f4i l\u1ea1i kem sau m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u1ea1t \u0111\u01b0\u1ee3c sau khi b\u00f4i t\u1eeb 15-30 ph\u00fat.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kem ch\u1ed1ng n\u1eafng v\u1eadt l\u00fd th\u00ec th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n ch\u1ec9 l\u00e0 c\u00e1c oxit kim lo\u1ea1i nh\u01b0 ZinC oxide v\u00e0 titanium dioxide t\u00e1c d\u1ee5ng nh\u01b0 m\u00e0ng g\u01b0\u01a1ng ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng tr\u00ean da. V\u1edbi \u01b0u \u0111i\u1ec3m t\u00e1c d\u1ee5ng ngay v\u00e0 k\u00e9o d\u00e0i sau khi b\u00f4i m\u00e0 kh\u00f4ng c\u1ea7n ch\u1edd \u0111\u1ee3i \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 t\u1ee9c th\u00ec. Ngo\u00e0i ra \u00edt g\u00e2y k\u00edch \u1ee9ng n\u00ean ph\u00f9 h\u1ee3p v\u1edbi m\u1ecdi l\u1ee9a tu\u1ed5i v\u00e0 lo\u1ea1i da. Tuy nhi\u00ean lo\u1ea1i n\u00e0y th\u01b0\u1eddng d\u00e0y v\u00e0 \u0111\u1eb7c n\u00ean g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng b\u00ed, b\u00edt t\u1eafc l\u1ed7 ch\u00e2n l\u00f4ng d\u1eabn \u0111\u1ebfn m\u1ee5n v\u00e0 t\u0103ng b\u00e0i ti\u1ebft d\u1ea7u. Lo\u1ea1i n\u00e0y c\u0169ng d\u1ec5 b\u1ecb tr\u00f4i khi g\u1eb7p n\u01b0\u1edbc v\u00e0 khi ti\u1ebft nhi\u1ec1u m\u1ed3 h\u00f4i do \u0111\u00f3 \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi n\u01b0\u1edbc v\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u01b0\u1eddng \u0111\u1ed9 cao ngo\u00e0i tr\u1eddi. Khi s\u1eed d\u1ee5ng c\u00f2n t\u1ea1o m\u1ed9t l\u1edbp tr\u1eafng tr\u00ean da n\u00ean t\u00ednh th\u1ea9m m\u1ef9 c\u0169ng h\u1ea1n ch\u1ebf.<\/p>\n<ul>\n<li>Theo ch\u1ec9 s\u1ed1 ch\u1ed1ng n\u1eafng: kem ch\u1ed1ng n\u1eafng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo 2 lo\u1ea1i ch\u1ec9 s\u1ed1 ch\u1ed1ng n\u1eafng ph\u1ed5 bi\u1ebfn l\u00e0 SPF (sun protection factor) v\u00e0 PA (protection grade of UVA)<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\" wp-image-670 aligncenter\" src=\"http:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-300x200.jpg\" alt=\"\" width=\"362\" height=\"241\" srcset=\"https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-300x200.jpg 300w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-1024x682.jpg 1024w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-768x512.jpg 768w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-1536x1024.jpg 1536w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-1320x880.jpg 1320w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231-510x340.jpg 510w, https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/07\/sunscreen-231.jpg 2000w\" sizes=\"(max-width: 362px) 100vw, 362px\" \/><\/p>\n<p>Ch\u1ec9 s\u1ed1 SPF (sun protection factor) l\u00e0 \u0111\u1ecbnh m\u1ee9c \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i tia UV \u0111\u01b0\u1ee3c d\u00f9ng trong kem ch\u1ed1ng n\u1eafng. \u0110\u1ecbnh m\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c t\u00ednh theo s\u1ed1 gi\u1edd v\u00e0 t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m khi s\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng tr\u00ean da. Ch\u1ec9 s\u1ed1 SPF trong kem ch\u1ed1ng n\u1eafng th\u1ea5p nh\u1ea5t l\u00e0 15 v\u00e0 cao nh\u1ea5t l\u00e0 100. Theo \u0111\u1ecbnh m\u1ee9c Qu\u1ed1c t\u1ebf th\u00ec 1 SPF c\u00f3 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 l\u00e0n da v\u00e0 h\u1ea1n ch\u1ebf nh\u1eefng t\u00e1c h\u1ea1i c\u1ee7a tia UV trong kho\u1ea3ng 10 ph\u00fat. C\u1ee5 th\u1ec3 l\u00e0:<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kem ch\u1ed1ng n\u1eafng c\u00f3 ch\u1ec9 s\u1ed1 SPF l\u00e0 15 s\u1ebd c\u00f3 t\u00e1c d\u1ee5ng b\u1ea3o v\u1ec7 d\u1ea1 trong v\u00f2ng 150 ph\u00fat.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kem ch\u1ed1ng n\u1eafng c\u00f3 ch\u1ec9 s\u1ed1 SPF l\u00e0 50 s\u1ebd c\u00f3 t\u00e1c d\u1ee5ng b\u1ea3o v\u1ec7 d\u1ea1 trong v\u00f2ng 500 ph\u00fat.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C\u00e1ch \u0111\u1ecdc hi\u1ec3u ch\u1ec9 s\u1ed1 SPF v\u00e0 \u00fd ngh\u0129a ch\u1ec9 s\u1ed1 SPF: Ch\u1ec9 s\u1ed1 SPF \u0111\u01b0\u1ee3c hi\u1ec3u theo 2 c\u00e1ch nh\u01b0 sau:<\/p>\n<p>Theo th\u1eddi gian: Ngh\u0129a l\u00e0 l\u1ea5y ch\u1ec9 s\u1ed1 SPF nh\u00e2n 10 \u0111\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c th\u1eddi gian b\u1ea3o v\u1ec7 da ch\u1ed1ng t\u00e1c h\u1ea1i c\u1ee7a tia UVB t\u00ednh b\u1eb1ng ph\u00fat. V\u00ed d\u1ee5 kem ch\u1ed1ng n\u1eafng c\u00f3 ch\u1ec9 s\u1ed1 SPF l\u00e0 30 th\u00ec th\u1eddi gian b\u1ea3o v\u1ec7 da kh\u1ecfi t\u00e1c h\u1ea1i c\u1ee7a tia UVB l\u00e0 300 ph\u00fat.<\/p>\n<p>Theo ph\u1ea7n tr\u0103m: Khi \u0111\u1eb7t trong \u0111i\u1ec1u ki\u1ec7n ho\u00e0n h\u1ea3o th\u00ec kem ch\u1ed1ng n\u1eafng c\u00f3 ch\u1ec9 s\u1ed1 SPF l\u00e0 15 s\u1ebd ch\u1eb7n \u0111\u01b0\u1ee3c kho\u1ea3ng 93,4% t\u00e1c h\u1ea1i t\u1eeb tia UV, SPF 30 l\u00e0 kho\u1ea3ng 96,7%, SPF 50 l\u00e0 kho\u1ea3ng 98%. T\u1ef7 l\u1ec7 n\u00e0y c\u0169ng mang t\u00ednh ch\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PA (protection grade of UVA) l\u00e0 ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng l\u1ecdc tia UVA c\u1ee7a kem ch\u1ed1ng n\u1eafng do Hi\u1ec7p H\u1ed9i M\u1ef9 Ph\u1ea9m Nh\u1eadt B\u1ea3n c\u00f4ng b\u1ed1.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C\u00e1ch \u0111\u1ecdc ch\u1ec9 s\u1ed1 PA tr\u00ean kem ch\u1ed1ng n\u1eafng: Th\u00f4ng th\u01b0\u1eddng tr\u00ean bao b\u00ec kem ch\u1ed1ng n\u1eafng ch\u1ec9 s\u1ed1 PA \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n k\u00e8m theo c\u00e1c d\u1ea5u \u201c+\u201d, \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 sau:<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PA+ c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UVA \u1edf m\u1ee9c t\u1eeb 40-50%.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PA++ c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UVA t\u1ed1t h\u01a1n, \u1edf m\u1ee9c t\u1eeb 60-70%.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PA+++: c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UVA t\u1ed1t, t\u1edbi 90%.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PA++++: C\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UVA r\u1ea5t t\u1ed1t, tr\u00ean 95%.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tuy nhi\u00ean \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i kem ch\u1ed1ng n\u1eafng, c\u00f3 th\u1ec3 kh\u00f4ng th\u1ea5y k\u00fd hi\u1ec7u ch\u1ec9 s\u1ed1 PA m\u00e0 thay v\u00e0o \u0111\u00f3 l\u00e0 k\u00fd hi\u1ec7u vi\u1ebft t\u1eaft nh\u01b0 UVA-UVB, UVA\/UVB hay UVA1, UVA2. Ho\u1eb7c l\u00e0 nh\u1eefng k\u00fd hi\u1ec7u ri\u00eang c\u1ee7a m\u1ed9t s\u1ed1 th\u01b0\u01a1ng hi\u1ec7u, qu\u1ed1c gia.. V\u00ed d\u1ee5 nh\u01b0 SPF 60-12 ngh\u0129a l\u00e0 SPF 60 v\u00e0 PA+++.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ch\u1ec9 s\u1ed1 SPF tr\u00ean kem ch\u1ed1ng n\u1eafng cho bi\u1ebft kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i t\u00e1c h\u1ea1i c\u1ee7a tia UVA v\u00e0 tia UVB l\u00ean c\u01a1 th\u1ec3. Th\u1eddi \u0111i\u1ec3m m\u00f9a h\u00e8 l\u01b0\u1ee3ng tia UV xu\u1ed1ng tr\u00e1i \u0111\u1ea5t cao nh\u1ea5t, g\u00e2y \u1ea3nh h\u01b0\u1edfng kh\u00f4ng nh\u1ecf t\u1edbi c\u01a1 th\u1ec3. S\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p h\u1eefu hi\u1ec7u tr\u00e1nh l\u1ea1i t\u00e1c h\u1ea1i c\u1ee7a tia UV.<\/p>\n<h3>C\u00e1ch s\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng<\/h3>\n<ul>\n<li>N\u00ean s\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng tr\u01b0\u1edbc khi ra ngo\u00e0i 15-30 ph\u00fat v\u1edbi kem ch\u1ed1ng n\u1eafng h\u00f3a h\u1ecdc v\u00e0 c\u00f3 th\u1ec3 ra ngo\u00e0i ngay v\u1edbi kem ch\u1ed1ng n\u1eafng v\u1eadt l\u00fd.<\/li>\n<li>B\u00f4i l\u1ea1i kem ch\u1ed1ng n\u1eafng m\u1ed7i 2h v\u00e0 ngay sau khi b\u01a1i hay ho\u1ea1t \u0111\u1ed9ng ra nhi\u1ec1u m\u1ed3 h\u00f4i.<\/li>\n<li>N\u00ean b\u00f4i kem th\u01b0\u1eddng xuy\u00ean su\u1ed1t c\u1ea3 ng\u00e0y khi ho\u1ea1t \u0111\u1ed9ng ngo\u00e0i tr\u1eddi v\u00e0 k\u00e8m th\u00eam c\u00e1c v\u1eadt d\u1ee5ng ho\u1eb7c qu\u1ea7n \u00e1o ch\u1ed1ng n\u1eafng.<\/li>\n<li>Nh\u1edb l\u1eafc \u0111\u1ec1u l\u1ecd kem tr\u01b0\u1edbc khi b\u00f4i ho\u1eb7c x\u1ecbt v\u00e0 \u0111\u1ea3m b\u1ea3o b\u00f4i \u0111\u1ee7 l\u01b0\u1ee3ng kem c\u1ea7n thi\u1ebft l\u00e0 r\u1ea5t quan tr\u1ecdng (2mg\/cm<sup>2<\/sup>).<\/li>\n<li>Xoa kem \u0111\u1ec1u v\u00e0 th\u1eadt k\u0129, c\u1ea9n th\u1eadn b\u00f4i v\u00f9ng xung quanh m\u1eaft.<\/li>\n<li>L\u1ef1a ch\u1ecdn c\u00e1c lo\u1ea1i kem ch\u1ed1ng n\u1eafng ph\u1ed5 r\u1ed9ng c\u00f3 SPF&gt;=30. Ngo\u00e0i ra l\u1ef1a ch\u1ecdn c\u00e1c lo\u1ea1i kem ph\u00f9 h\u1ee3p v\u1edbi tu\u00fdp da c\u1ee7a b\u1ea1n v\u00e0 l\u01b0u \u00fd c\u00e1c th\u00e0nh ph\u1ea7n g\u00e2y k\u00edch \u1ee9ng v\u1edbi da nh\u1ea1y c\u1ea3m (\u0111\u1eb7c bi\u1ec7t PABA para-aminobenzoic acid).<\/li>\n<\/ul>\n<p><strong><em>\u0110\u1ec3 kh\u00e1m v\u00e0 t\u01b0 v\u1ea5n c\u00f9ng v\u1edbi c\u00e1c chuy\u00ean gia da li\u1ec5u th\u1ea9m m\u1ef9 vui l\u00f2ng li\u00ean h\u1ec7 qua s\u1ed1 hotline 0989.599.288. Xin tr\u00e2n tr\u1ecdng c\u1ea3m \u01a1n!<\/em><\/strong><\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>V\u00ec sao ph\u1ea3i ch\u1ed1ng n\u1eafng? \u00c1nh s\u00e1ng m\u1eb7t tr\u1eddi mang l\u1ea1i cho ch\u00fang ta r\u1ea5t nhi\u1ec1u l\u1ee3i \u00edch. T\u1eeb vi\u1ec7c cung c\u1ea5p \u00e1nh s\u00e1ng \u0111\u1ec3 ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn nh\u1eadn \u0111\u01b0\u1ee3c m\u1ecdi v\u1eadt hay gi\u00fap c\u01a1 th\u1ec3 t\u1ed5ng h\u1ee3p Vitamin D- m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong h\u1ea5p thu canxi gi\u00fap x\u01b0\u01a1ng ch\u1eafc kh\u1ecfe [&#8230;]\n","protected":false},"author":1,"featured_media":569,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-https-hdclinic-vn-page_id460"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/hdclinic.vn\/wp-content\/uploads\/2021\/06\/gettyimages-200568845-001.jpg","_links":{"self":[{"href":"https:\/\/hdclinic.vn\/index.php?rest_route=\/wp\/v2\/posts\/568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hdclinic.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hdclinic.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hdclinic.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hdclinic.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=568"}],"version-history":[{"count":0,"href":"https:\/\/hdclinic.vn\/index.php?rest_route=\/wp\/v2\/posts\/568\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hdclinic.vn\/index.php?rest_route=\/wp\/v2\/media\/569"}],"wp:attachment":[{"href":"https:\/\/hdclinic.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hdclinic.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hdclinic.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}