If you are looking for the exact definition of a word, BIODERMA provides you with a dermatological glossary of the indispensable terms to better understand how your skin functions. To find the definition you want, just click on the first letter of the word you are looking for on the alphabetical list, then on the word itself.
UVA
Emitted by the sun, these ultraviolet rays which reach the surface of the Earth play an important role in skin pigmentation (tanning), skin ageing and the appearance of skin cancers, among others.
UVB
Emitted by the sun, these ultraviolet rays which reach the surface of the Earth play an important role in the occurrence of sunburn, tanning and skin cancers, among others.