Skinceuticals Retinol 0.5 Anti Aging 30ml(1oz) Contains high concentrations of pure retinol to revitalize the skin and help diminish signs of aging. Ingredients: Water, Cyclomethicone, Cyclopentasiloxane, Dimethicone Laureth-4, Dimethicone Laureth -23, Cholesterol, Ceramide, Glycerin, Passiflora Incarnata Flower Extract, Citric Acid, Methylisothiazolinone, Tetrasodium EDTA.