{"id":17204,"date":"2023-09-01T15:17:25","date_gmt":"2023-09-01T15:17:25","guid":{"rendered":"https:\/\/dialtous.com\/?p=17204"},"modified":"2023-09-01T15:17:25","modified_gmt":"2023-09-01T15:17:25","slug":"uv-la-gi","status":"publish","type":"post","link":"https:\/\/dialtous.com\/uv-la-gi\/","title":{"rendered":"Tia UV l&#xE0; g&#xEC;? T&#xE1;c h&#x1EA1;i, l&#x1EE3;i &#xED;ch c&#x1EE7;a tia c&#x1EF1;c t&#xED;m &#x111;&#x1ED1;i v&#x1EDB;i da v&#xE0; m&#x1EAF;t"},"content":{"rendered":"<h2>Tia UV l\u00e0 g\u00ec?<\/h2>\n<p>Tia UV (Ultraviolet) hay c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean g\u1ecdi tia t\u1eed ngo\u1ea1i, tia c\u1ef1c t\u00edm l\u00e0 m\u1ed9t d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb v\u1edbi b\u01b0\u1edbc s\u00f3ng t\u1eeb 10 &#8211; 380 nm. \u0110\u00e2y l\u00e0 d\u1ea1ng b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb t\u1eeb ngu\u1ed3n m\u1eb7t tr\u1eddi ho\u1eb7c c\u00e1c ngu\u1ed3n nh\u00e2n t\u1ea1o kh\u00e1c nh\u01b0 gi\u01b0\u1eddng t\u1eafm n\u1eafng, m\u1ecf h\u00e0n,&#8230; V\u00ec tia UV n\u1eb1m ngo\u00e0i ph\u1ea1m vi c\u1ee7a m\u00e0u t\u00edm, n\u00ean kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y b\u1eb1ng m\u1eaft th\u01b0\u1eddng.<\/p>\n<p>C\u00f3 t\u1ed5ng c\u1ed9ng 3 lo\u1ea1i tia UV:<\/p>\n<ul>\n<li>Tia UVA: C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u00f3ng d\u00e0i hay \u00e1nh s\u00e1ng \u0111en, v\u1edbi b\u01b0\u1edbc s\u00f3ng t\u1eeb 380 &#8211; 315 nm.<\/li>\n<li>Tia UVB: C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u00e1nh s\u00e1ng trung, v\u1edbi b\u01b0\u1edbc s\u00f3ng t\u1eeb 315 &#8211; 280 nm.<\/li>\n<li>Tia UVC: C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u00f3ng ng\u1eafn hay s\u00f3ng c\u00f3 t\u00ednh ti\u1ec7t tr\u00f9ng, v\u1edbi b\u01b0\u1edbc s\u00f3ng ng\u1eafn h\u01a1n 280 nm.<\/li>\n<\/ul>\n<h2>T\u00e1c \u0111\u1ed9ng c\u1ee7a tia UV \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi<\/h2>\n<h3>2.1 T\u00e1c h\u1ea1i c\u1ee7a tia UV<\/h3>\n<p>Tia UV c\u00f3 th\u1ec3 g\u00e2y nhi\u1ec1u t\u1ed5n h\u1ea1i \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a ch\u00fang ta nh\u01b0 t\u1ed5n th\u01b0\u01a1ng m\u1eaft, g\u00e2y ung th\u01b0 da, v\u00e0 ch\u00e1y n\u1eafng. Tia UVB g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 m\u1eaft nh\u01b0 vi\u00eam gi\u00e1c m\u1ea1c, h\u1ea1t k\u1ebft gi\u00e1c m\u1ea1c. Tia UVA, trong khi \u0111\u00f3, c\u00f3 th\u1ec3 xuy\u00ean qua gi\u00e1c m\u1ea1c, \u0111i v\u00e0o th\u1ee7y tinh th\u1ec3 ho\u1eb7c v\u00f5ng m\u1ea1c, d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 \u0111\u1ee5c th\u1ee7y tinh th\u1ec3 hay tho\u00e1i h\u00f3a \u0111i\u1ec3m v\u00e0ng.<\/p>\n<p>Theo trang skincancer.org, \u0111\u1ebfn 90% s\u1ed1 ca ung th\u01b0 da l\u00e0 do t\u00e1c \u0111\u1ed9ng c\u1ee7a tia UV. Ti\u1ebfp x\u00fac v\u1edbi tia UV \u1edf m\u1ee9c \u0111\u1ed9 cao c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra ung th\u01b0 bi\u1ec3u m\u00f4 t\u1ebf b\u00e0o \u0111\u00e1y, ung th\u01b0 bi\u1ec3u m\u00f4 t\u1ebf b\u00e0o v\u1ea3y v\u00e0 c\u00e1c kh\u1ed1i u \u00e1c t\u00ednh tr\u00ean da. Ch\u00e1y n\u1eafng l\u00e0 t\u00ecnh tr\u1ea1ng da b\u1ecb \u0111\u1ecf \u1eedng v\u00e0 b\u1ecfng r\u00e1t, v\u00e0 th\u01b0\u1eddng x\u1ea3y ra sau khi ti\u1ebfp x\u00fac v\u1edbi tia UV trong \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi. Ch\u00e1y n\u1eafng c\u00f3 th\u1ec3 x\u1ea3y ra ngay c\u1ea3 trong nh\u1eefng ng\u00e0y m\u00e1t m\u1ebb v\u00e0 c\u00f3 nhi\u1ec1u m\u00e2y, v\u00ec tia UV c\u00f3 th\u1ec3 xuy\u00ean qua m\u00e2y v\u00e0 ti\u1ebfp x\u00fac v\u1edbi da.<\/p>\n<p>Tia UV c\u00f2n c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n th\u01b0\u01a1ng cho h\u1ec7 th\u1ed1ng mi\u1ec5n d\u1ecbch. Ch\u00e1y n\u1eafng c\u00f3 th\u1ec3 thay \u0111\u1ed5i s\u1ef1 ph\u00e2n b\u1ed1 v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c nh\u00f3m t\u1ebf b\u00e0o b\u1ea1ch c\u1ea7u trong c\u01a1 th\u1ec3 ng\u01b0\u1eddi trong v\u00f2ng 24 gi\u1edd sau ti\u1ebfp x\u00fac v\u1edbi \u00e1nh n\u1eafng. N\u1ebfu t\u00ecnh tr\u1ea1ng n\u00e0y di\u1ec5n ra nhi\u1ec1u l\u1ea7n trong th\u1eddi gian d\u00e0i, c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n h\u1ea1i nghi\u00eam tr\u1ecdng \u0111\u1ebfn h\u1ec7 mi\u1ec5n d\u1ecbch.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, tia UV c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y l\u00e3o h\u00f3a da. Tia UV c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1 h\u1ee7y collagen v\u00e0 m\u00f4 li\u00ean k\u1ebft d\u01b0\u1edbi l\u1edbp tr\u00ean c\u00f9ng c\u1ee7a da, d\u1eabn \u0111\u1ebfn vi\u1ec7c xu\u1ea5t hi\u1ec7n c\u00e1c \u0111\u1ed1m n\u00e2u, t\u00e0n nhang, v\u00e0 n\u1ebfp nh\u0103n.<\/p>\n<h3>2.2 L\u1ee3i \u00edch c\u1ee7a tia UV<\/h3>\n<p>M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c, tia UV c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 l\u1ee3i \u00edch. Khi ti\u1ebfp x\u00fac v\u1edbi tia UV trong \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, c\u01a1 th\u1ec3 t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c vitamin D. Vitamin D gi\u00fap x\u00e2y d\u1ef1ng v\u00e0 duy tr\u00ec s\u1ee9c kh\u1ecfe x\u01b0\u01a1ng, v\u00ec canxi ch\u1ec9 \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 khi c\u00f3 vitamin D.<\/p>\n<p>Ngo\u00e0i ra, tia UV c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c \u0111i\u1ec1u tr\u1ecb b\u1ec7nh v\u1ea3y n\u1ebfn. Vi\u1ec7c \u00e1p d\u1ee5ng tia UV gi\u00fap l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh t\u0103ng tr\u01b0\u1edfng c\u1ee7a c\u00e1c t\u1ebf b\u00e0o da, gi\u1ea3m tri\u1ec7u ch\u1ee9ng b\u1ec7nh v\u1ea3y n\u1ebfn.<\/p>\n<p>Tia UV c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng kh\u1eed tr\u00f9ng v\u00e0 ti\u1ec7t tr\u00f9ng. B\u1eb1ng c\u00e1ch xuy\u00ean qua m\u00e0ng t\u1ebf b\u00e0o v\u00e0 ph\u00e1 h\u1ee7y DNA, tia UV c\u00f3 th\u1ec3 ti\u00eau di\u1ec7t c\u00e1c vi khu\u1ea9n v\u00e0 ng\u0103n ch\u1eb7n kh\u1ea3 n\u0103ng t\u00e1i sinh v\u00e0 nh\u00e2n l\u00ean c\u1ee7a ch\u00fang. V\u00ec v\u1eady, vi\u1ec7c ph\u01a1i c\u00e1c v\u1eadt d\u1ee5ng nh\u01b0 t\u00e3 v\u1ea3i cho b\u00e9, qu\u1ea7n l\u00f3t tr\u1ebb em, v\u00e0 kh\u0103n m\u1eb7t d\u01b0\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi gi\u00fap ti\u1ec7t tr\u00f9ng ch\u00fang.<\/p>\n<h2>C\u00e1ch h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng c\u1ee7a tia UV<\/h2>\n<h3>3.1 S\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng<\/h3>\n<p>M\u1ed9t c\u00e1ch ph\u1ed5 bi\u1ebfn v\u00e0 d\u1ec5 d\u00e0ng \u0111\u1ec3 h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng c\u1ee7a tia UV l\u00e0 s\u1eed d\u1ee5ng kem ch\u1ed1ng n\u1eafng h\u00e0ng ng\u00e0y v\u00e0 th\u01b0\u1eddng xuy\u00ean. Khi ch\u1ecdn mua kem ch\u1ed1ng n\u1eafng, b\u1ea1n n\u00ean quan t\u00e2m \u0111\u1ebfn hai ch\u1ec9 s\u1ed1 quan tr\u1ecdng: SPF v\u00e0 PA. Ch\u1ec9 s\u1ed1 SPF cho bi\u1ebft kh\u1ea3 n\u0103ng ch\u1ed1ng tia UVB c\u1ee7a kem ch\u1ed1ng n\u1eafng, v\u00e0 ch\u1ec9 s\u1ed1 PA cho bi\u1ebft kh\u1ea3 n\u0103ng l\u1ecdc tia UVA. Ch\u1ecdn kem ch\u1ed1ng n\u1eafng c\u00f3 SPF cao v\u00e0 PA nhi\u1ec1u d\u1ea5u c\u1ed9ng s\u1ebd mang l\u1ea1i hi\u1ec7u qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n<h3>3.2 Ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng<\/h3>\n<p>\u0110\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3 tr\u01b0\u1edbc t\u00e1c \u0111\u1ed9ng c\u1ee7a tia UV, b\u1ea1n c\u1ea7n c\u00f3 ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng h\u1ee3p l\u00fd v\u00e0 b\u1ed5 sung nhi\u1ec1u th\u1ef1c ph\u1ea9m ch\u1ee9a ch\u1ea5t ch\u1ed1ng oxy h\u00f3a nh\u01b0 cam, qu\u00fdt, tr\u00e0 xanh, c\u00e0 r\u1ed1t,&#8230; B\u1ea1n c\u0169ng n\u00ean b\u1ed5 sung c\u00e1c lo\u1ea1i vitamin v\u00e0 kho\u00e1ng ch\u1ea5t \u0111\u1ec3 n\u00e2ng cao s\u1ee9c \u0111\u1ec1 kh\u00e1ng cho c\u01a1 th\u1ec3 tr\u01b0\u1edbc t\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1nh n\u1eafng v\u00e0 m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i.<\/p>\n<h3>3.3 S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ch\u1ed1ng n\u1eafng c\u01a1 h\u1ecdc<\/h3>\n<p>\u0110\u1ec3 b\u1ea3o v\u1ec7 b\u1ea3n th\u00e2n kh\u1ecfi c\u00e1c t\u00e1c \u0111\u1ed9ng c\u1ee7a tia UV trong \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi, b\u1ea1n c\u1ea7n m\u1eb7c \u0111\u1ed3 b\u1ea3o h\u1ed9 nh\u01b0 \u00e1o d\u00e0i tay, \u00e1o kho\u00e1c, \u00e1o ch\u1ed1ng tia UV, qu\u1ea7n d\u00e0i, m\u0169 r\u1ed9ng v\u00e0nh,&#8230; \u0110\u1ed1i v\u1edbi tr\u1ebb em, b\u1ea1n c\u0169ng n\u00ean trang b\u1ecb k\u00ednh m\u00e1t v\u00e0 m\u0169 cho h\u1ecd. H\u00e3y ch\u1ecdn nh\u1eefng s\u1ea3n ph\u1ea9m c\u00f3 t\u00ednh n\u0103ng ch\u1ed1ng tia UV \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 kh\u1ecfi \u00e1nh n\u1eafng.<\/p>\n<p>\u0110\u1eb7c bi\u1ec7t, trong kho\u1ea3ng th\u1eddi gian t\u1eeb 10 &#8211; 14 gi\u1edd, b\u1ea1n n\u00ean tr\u00e1nh ti\u1ebfp x\u00fac v\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi, v\u00ec \u0111\u00e2y l\u00e0 th\u1eddi gian m\u00e0 tia UV ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh m\u1ebd nh\u1ea5t.<\/p>\n<h2>M\u1eaft k\u00ednh ch\u1ed1ng tia UV &#8211; \u00dd ngh\u0129a c\u1ee7a c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1eaft k\u00ednh<\/h2>\n<h3>4.1 L\u1ee3i \u00edch c\u1ee7a m\u1eaft k\u00ednh ch\u1ed1ng tia UV<\/h3>\n<p>M\u1eaft k\u00ednh c\u00f3 tr\u00f2ng ch\u1ed1ng tia UV c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n \u0111\u1ebfn 99% tia UV, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho m\u1eaft ngay c\u1ea3 khi l\u00e0m vi\u1ec7c ngo\u00e0i tr\u1eddi d\u01b0\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi. L\u1edbp ph\u1ee7 ch\u1ed1ng tia UV ho\u00e0n to\u00e0n trong su\u1ed1t, do \u0111\u00f3 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh th\u1eddi trang. M\u1eaft k\u00ednh ch\u1ed1ng tia UV c\u00f2n c\u00f3 l\u1edbp b\u1ea3o v\u1ec7 ch\u1ed1ng hao m\u00f2n, gi\u00fap duy tr\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng tia UV theo th\u1eddi gian.<\/p>\n<h3>4.2 \u00dd ngh\u0129a c\u1ee7a c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1eaft k\u00ednh<\/h3>\n<p>C\u00f3 nhi\u1ec1u ti\u00eau chu\u1ea9n \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UV c\u1ee7a m\u1eaft k\u00ednh. Tuy nhi\u00ean, hai ch\u1ec9 s\u1ed1 ph\u1ed5 bi\u1ebfn l\u00e0 % kh\u1ea3 n\u0103ng ch\u1ed1ng tia UV v\u00e0 b\u01b0\u1edbc s\u00f3ng tia UV c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n. V\u00ed d\u1ee5, m\u1ed9t m\u1eaft k\u00ednh c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UV &#8220;80%&#8221; c\u00f3 ngh\u0129a l\u00e0 tr\u00f2ng k\u00ednh ng\u0103n ch\u1eb7n \u0111\u01b0\u1ee3c 80% tia UV chi\u1ebfu v\u00e0o v\u00e0 ch\u1ec9 c\u00f2n 20% tia UV t\u00e1c \u0111\u1ed9ng l\u00ean m\u1eaft. M\u1eaft k\u00ednh ch\u1ed1ng tia UV c\u00f3 b\u01b0\u1edbc s\u00f3ng &#8220;UV400&#8221; c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UV c\u00f3 b\u01b0\u1edbc s\u00f3ng l\u00ean t\u1edbi 400 nm, t\u1ee9c l\u00e0 ng\u0103n ch\u1eb7n t\u1ea5t c\u1ea3 c\u00e1c tia UV t\u1eeb 10 &#8211; 380 nm.<\/p>\n<p>Hy v\u1ecdng v\u1edbi nh\u1eefng th\u00f4ng tin tr\u00ean, b\u1ea1n hi\u1ec3u r\u00f5 v\u1ec1 t\u00e1c \u0111\u1ed9ng v\u00e0 l\u1ee3i \u00edch c\u1ee7a tia UV c\u0169ng nh\u01b0 c\u00e1ch h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 \u0111\u1ec3 b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe c\u1ee7a b\u1ea3n th\u00e2n v\u00e0 gia \u0111\u00ecnh. N\u1ebfu b\u1ea1n c\u00f3 b\u1ea5t k\u1ef3 th\u1eafc m\u1eafc n\u00e0o, h\u00e3y li\u00ean h\u1ec7 v\u1edbi t\u1ed5ng \u0111\u00e0i 1900.866.874 (7:30 &#8211; 22:00) ho\u1eb7c truy c\u1eadp trang web LADEC \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u00e0 gi\u1ea3i \u0111\u00e1p th\u00eam.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tia UV l\u00e0 g\u00ec? Tia UV (Ultraviolet) hay c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean g\u1ecdi tia t\u1eed ngo\u1ea1i, tia c\u1ef1c t\u00edm l\u00e0 m\u1ed9t d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb v\u1edbi b\u01b0\u1edbc s\u00f3ng t\u1eeb 10 &#8211; 380 nm. \u0110\u00e2y l\u00e0 d\u1ea1ng b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb t\u1eeb ngu\u1ed3n m\u1eb7t tr\u1eddi ho\u1eb7c c\u00e1c ngu\u1ed3n nh\u00e2n t\u1ea1o kh\u00e1c nh\u01b0 gi\u01b0\u1eddng t\u1eafm [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"_links":{"self":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts\/17204"}],"collection":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/comments?post=17204"}],"version-history":[{"count":1,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts\/17204\/revisions"}],"predecessor-version":[{"id":17206,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts\/17204\/revisions\/17206"}],"wp:attachment":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/media?parent=17204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/categories?post=17204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/tags?post=17204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}