GLOSSARY  : Signs of age, wrinkles, firmness

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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Collagen

Collagen is a fibrous protein of the dermal tissue that acts as a frame. When young, it is strong and elastic. With age, its production decreases.

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