Epicutaneous patch testing
How to Patch & Test Your Cosmetic Products, Seoul Mamas
Patch Testing 101: The Process of Determining Skin Allergy Causes
If the redness does not fade, then you may have a mild allergy.
The same group later developed another series named Cosmetics Battery, with additional antigens and.
In this test, the application of the substances is duplicated on the back of the patient.
If this happens, your dermatologist may recommend testing other substances.