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Skincare & face

Patch test

A preliminary test on a small area of skin to rule out allergic reactions.

In a patch test, a small amount of product is applied to an inconspicuous area of skin – usually behind the ear or in the crook of the elbow – and the reaction observed over 24 to 48 hours.

When it is mandatory:

Before hair colour and bleach, before lash and brow tints, before lash adhesive and before permanent make-up. Allergic reactions to these products are documented and can be severe.

Why it must not be skipped:

Sensitisation can appear suddenly even after years of problem-free use. The test takes a few minutes and protects both client and studio – legally as well as medically. Many manufacturers explicitly require it.

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