Skin Bliss

Demystifying Skincare

Fragrance allergen diagnosis in skincare

How are allergic reactions to fragrances diagnosed?

  • Fragrance allergen diagnosis in skincare

    Fragrance allergen diagnosis in skincare


Contact allergy in humans to a specific perfume allergen is generally diagnosed by prognostic patch testing. This involves the application of small doses of the set of suspected allergens or the culprit product on a cotton patch either on the back or the upper arm of the patient for a period of 24 to 48 hours. In days after removal of the patch, exposed skin sites are visually examined by an expert, generally a dermatologist, for the occurrence of allergic reactions following topical exposure to the potential contact allergen. The whole process of identifying contact allergens is standardised. There are international guidelines for the application, reading and interpretation of the patch test.