2.5% Retinol Gel #1 dermatologist recommended ingredient for wrinkles. Retinol is one of the best anti-aging skincare ingredients on the market today. Retinol has been proven to reduce the appearance of wrinkles time after time in clinical studies. Dermatologist recommend Retinol because it works. Our 2.5% Retinol Serum is a light gel and is one of the strongest formulas available. Rejuvenate your complexion and see visible results. Benefits and key ingredients: ---Retinol - 2.5% ---Skin firming treatment. ---Improves facial elasticity. ---Super antioxidants help keep your skin healthy. Skin types: all except sensitive skin. Product Instructions: Apply a pea size amount to entire face, neck and decollete. Follow with a moisturizer. This serum Can be used daily; can be used under make up. Follow with any of our moisturizers.