Dermatological tests in cosmetic products are tests to evaluate whether products are safe and effective on human skin. These tests are carried out to determine adverse effects such as skin irritation, allergic reactions, redness.

Dermatological testing is usually done on human volunteers. In these tests, the product is applied to a certain area and then monitored on the skin for a certain period of time. Any reaction or effect that occurs during this process is recorded.

Statements stating that products have undergone dermatological tests can be found on product packaging or on websites. Phrases such as "Dermatologically tested" or "Skin tested" are used to indicate that the product is safe on human skin.