Open epicutaneous test

The open epicutaneous test is a modified procedure designed to test products at lower exposures (no occlusion, shorter application time). These products include face masks, depilatory products, skin peelings, surface disinfectants and various household cleaners. An occlusion would be too far from the actual application mode and therefore not meaningful. Furthermore, the open epicutaneous test is suitable for the exclusion of immediate reactions.

Substances are usually applied to the skin at a suitable concentration for 20 minutes. Readings are taken immediately after the product has been removed and 30 and 60 minutes after product application.


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