Whitening/ Lightening

Whitening/ lightening efficacy

Testing the whitening or lightening efficacy of cosmetic products is a specialized process used to evaluate the ability of a product to reduce non-spot area, dark spots, or melasma.

These tests help determine whether the product can deliver the claimed benefits of skin whitening or lightening. Here are the key considerations for conducting whitening/lightening efficacy tests for cosmetic products:

Measurement: body (forearm, leg, etc.)
Kinetics: T0 and T+X weeks
Conclusion:
- Skin whitening
- Skin lightening