COSRX The Retinol 0.5 Oil is a concentrated nighttime treatment featuring 0.5% pure retinol in a lightweight squalane base. Retinol is a form of vitamin A that supports skin cell turnover, helping to smooth texture and reduce the appearance of fine lines over time. The oil format absorbs easily and helps minimize the dryness that can sometimes come with retinol use. Who is This For?: This mid-strength formula works well for anyone looking to level up their retinol routine, especially if you've already used lower concentrations like 0.1% or 0.3%. It's particularly helpful for concerns like fine lines, uneven texture, or dullness, but suitable for normal, combination, and oily skin types. Key Benefits: - Supports cell turnover to help smooth texture and reduce visible signs of aging - Squalane base cushions retinol delivery and helps prevent dryness - Super Vitamin E (Tocotrienol) provides antioxidant support and keeps the formula stable - Lightweight oil texture absorbs well without feeling heavy Key Ingredients: - 0.5% Pure Retinol — Promotes cell renewal to improve texture, tone, and the appearance of fine lines - Squalane — A plant-derived oil that hydrates and helps buffer retinol for gentler delivery - Tocotrienol (Super Vitamin E) — An antioxidant that protects skin and stabilizes the retinol