3erum1ab Retinol Serum High Strength for Face and Skin, Unique Double Active Ingredients of 5% Retinol & 2.5% Vitamin E, Outstanding Synthetic Effect to Reduce Wrinkle, and Dark Circle (Retinol Serum)EFFECTIVE - 3erum1ab Retinol Serum is proven to improve mottled pigmentation, fine lines, w..