GLOSSARY

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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Allergen

An allergen is a foreign substance that triggers an allergy in an individual. The body uses its immune cells to attack substances that are in fact not dangerous. The allergens that are likely to trigger eczema or sinusitis include pollen, dust mites and animal hairs.

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