COSRX Standards:COSRX Standards: All COSRX products are formulated with skin-friendly ingredients that alleviate irritated skin. Hypoallergenic, Dermatologist tested, Animal Testing-FREE, Parabens-FREE, Sulfates-FREE, Phthalates-FREE. How to Use: Apply 1-2 drops as the last step of your nighttime skincare routine. *Perform a patch test on the body before using on the face.In the first two weeks of using the product, it is recommended to use 3 times per week at night. After the third week, use every other day for maximum results. Dermatological Ingredients: Retinol is a form of active and pure Vitamin A that helps improves wrinkles and firm skin. 91% Squalane calms inflammation and protects the skin's barrier. Super Vitamin E (Tocotrienol) helps fight signs of aging. Key Benefits: Based on real results from consumers' self assessments, the Retinol 0.5% Oil helps reduce wrinkles, creases and fine lines while increg the skin's elasticity and improving the skin's radiance. Retinol 0.5% Oil: Retinol helps reduce signs of aging such as fine lines and wrinkles to achieve smoother, firmer, and more youthful-looking skin. It helps renew and resuface the skin and leaves the face glowing with radiance.