GLOSSARY  : Sun for everyone

Is there a term from the field of dermatology and cosmetics that you do not understand? Would you like to know what it means? View the full definition from the La Roche-Posay glossary.

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UVB

UVB rays reach the epidermis and are responsible for sunburn. They stimulate the production of melanin and, therefore, the appearance of a tan; they also alter the DNA of skin cells. Like UVA's, UVB rays are involved in the formation of skin cancers.

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