COSRX The Retinol 0.5 Oil is an anti-aging facial treatment containing 0.5% pure retinol, Super Vitamin E, and squalane. This concentrated formula helps reduce fine lines and wrinkles while improving skin elasticity and radiance, making it ideal for intermediate retinol users seeking powerful anti-aging benefits. Key features: • Contains 0.5% pure retinol for anti-aging benefits • Formulated with Super Vitamin E and 91% squalane • Helps reduce appearance of fine lines and wrinkles • Improves skin elasticity and firmness • Enhances skin radiance and smoothness • Dermatologist tested and hypoallergenic • Free from parabens, sulfates, and phthalates For optimal results, begin using this product 2-3 times per week at night during the first two weeks. After the adaptation period, usage can be increased to every other night as tolerated. Apply 1-2 drops as the final step in your nighttime skincare routine. A patch test is recommended before facial application. The product is suitable for intermediate retinol users who are already accustomed to retinol treatments but still experiencing signs of aging.