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.
PPD (Persistent Pigment Darkening) is a measurement of the level of protection against UVA radiation. It therefore complements SPF, which assesses the degree of protection against UVB radiation. Anthelios guarantees that all its sun care products offer a higher level of UVA protection than the European recommendation.
This word belongs to the category For sensitive or sun allergy-prone skin.