COSRX The Retinol 0.5 Oil 20 ml.

COSRX The Retinol 0.5 Oil. Hightly concentrated 0.5 pure retinol oil formula that promotes smooth skin texture and visibly firm skin. No purified water or retinol derivatives. Formulated using 0.5 stabilized, pure retinol for powerful anti-aging care. Best for skin accustomed to retinol but still experiencing progressive signs of aging such as loss of elasticity and dryness. For intermediate-level retinol users looking for a highly concentrated, youth booster. Limit inital use to three times per week gradually increase frequency to every other night, use as tolerated.