Cosmetic Patch Tests: What They Are and What Participants Do

Patch tests are dermatological studies used to evaluate the skin tolerability of cosmetic products such as creams, cleansers, make-up, and skincare products. The aim is to verify that a product is well tolerated by the skin and does not cause irritation under normal conditions of use.

How Is a Patch Test Performed?

During the test, a small amount of the product is applied to the skin—typically on the back or forearm—using special dermatological adhesive patches.

The product remains in contact with the skin for a defined period, usually 24 or 48 hours, without being removed or exposed to water. Afterward, our experts assess the skin to identify any potential reactions, such as redness, irritation, or sensitivity.

What Will the Participant Do?

Taking part in a patch test is simple and safe. Participants will be asked to:

• Visit the laboratory for patch application;

• Follow the instructions provided by our specialized technicians;

• Avoid wetting or removing the patches during the specified period;

• Return for scheduled check-ups and patch removal.

It is important to note that clinical studies are not designed to cause irritation. Their purpose is to confirm that the product is well tolerated and does not induce irritative reactions under normal conditions of use.

Why Participate?

Volunteers play a fundamental role in the development and evaluation of cosmetic products. Their participation helps ensure that products are increasingly safe, effective, and suited to consumers’ needs.

Become a Complife Volunteer and Be Part of Research!

Complete the form on our website and contribute to the development of innovative cosmetic products.