Cach chon va su dung my pham chong nang

- Theo cac nha chuyen mon: Khi mua my pham chong nang, ngoai van de chu y chon thuong hieu uy tin de mua hang bao dam chat luong, can chu trong cac yeu to nhu do bam chac, khong troi, khong lem cua my pham.

- Nhieu nguoi tieu dung lam tuong kem chong nang co chi so SPF hay IP (dinh muc do luong so gio chong tia UV trung binh cua mot san pham) cao la san pham tot, that ra thong so nay chi co y nghia ve mat thoi gian, khong lien quan gi den do manh hay yeu cua san pham. Theo quy dinh 1 SPF tuong duong 15 phut kha nang chong nang toi da. Cu the, neu mot san pham ghi 20 SPF se co tac dung chong nang trong vong 5 gio lien tuc khi nguoi dung boi len da luong kem voi do day khoang 0,2 mm. Tac dung cua my pham chong nang phu thuoc vao dieu kien moi truong (mo hoi, bui ban, quan ao... ). Kem chong nang phu hop la loai co chi so SPF tu 10-20 cho da sam va 20-30 cho da sang ma khi su dung nguoi dung cam thay khong kho chiu khi boi len da va xai tot nhat trong khoang thoi gian tu 6 -12 thang ke tu khi mo nap.

- Cac loai kem co chi so cao (ecran total) tu 60-100 chi nen su dung o nhung vung da can co su bao ve toi uu nhu chong nam hay di ung anh sang... Neu di bien, di boi hay lam viec lien tuc duoi anh nang mat troi, nen thoa mot lop kem chong nang truoc khi thoa tiep lop kem hay phan nen co cung tac dung. Dac biet, cac loai kem tao lan da nau khi tam nang khong co tac dung chong tia UV, do do neu muon chong ung thu da cung can phai su dung kem chong nang...

- Nhieu nguoi tieu dung cho biet ho thuong dung cac loai my pham chong nang san xuat trong nuoc, truoc tien do gia ca phu hop, chat luong kha an toan, de tim mua ma khong so mua nham hang gia. Bac si Huynh Huy Hoang, Benh vien Da Lieu TPHCM, goi y cac ban nu khong can dau tu nhieu bo my pham, nhung vao mua nang nong thi can bo sung them mot so san pham co tinh chong nang, giu am. Mua nang nong, can chu y hon den viec tay trang, nhung nen nho sua tay trang va sua rua mat khong the thay the cho nhau...

N.H - (Theo NLD)