OUR TESTS


YOUSEN products have undergone comprehensive testing processes in independent laboratories, in line with our approach based on user safety and product quality. All tests were conducted to evaluate the skin compatibility, safety, and shelf-life stability of our products.

Dermatological Tests
YOUSEN products have been dermatologically tested. Tests were conducted under the supervision of dermatology specialists to evaluate skin compatibility and minimize sensitivity risks. The results show that the products can be safely used in skincare routines.

Challenge Test
A challenge test has been applied to ensure the microbiological safety of our products. This test aims to evaluate the effectiveness of the preservative system used in the product against microorganisms and its safety throughout the product's shelf life.

Stability Test
YOUSEN products have undergone stability tests. These tests are conducted to measure whether the products maintain their physical, chemical, and sensory properties under different environmental conditions (temperature, time, and storage conditions). Thus, the goal is to maintain the quality of our products throughout their shelf life.