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GLOSSARY : Sun for everyone

Your skin in the sun

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.

Photosensitisation

Photosensitisation, which is an increase in the skin's sensitivity to UV radiation, is often due to a chemical substance or medicinal product. It appears as a rash. Photosensitisation may have no known cause, be induced by an external (perfume) or internal (medicine) trigger or be of genetic origin.

This word also belongs to the categories For sensitive or sun allergy-prone skin, Children's skin and the sun.