The patch test shows any primary irritation or contact dermatitis (by provoking allergic skin reactions in sensitised volunteers) through epicutaneous, spatially and temporally restricted exposure to the formulation under examination.
The trial substances are applied under occlusive conditions as part of the patch test in order to boost their absorption. To produce a positive reaction it is necessary to exceed the threshold sensitivity value.


For the exact identification of the Dermatest guarantee seal, the respective date of the award is indicated in the seal motif, and the Internet address leads to further information on the test design.


Dermatest GmbH
Engelstraße 37
48143 Münster, Germany
+49 251 481637-0
+49 251 481637-66


Test Person Hotline

+49 251 / 481 637 69

Monday till Friday
09:00 am - 04:00 pm