Product details:What It Is:An advanced-strength retinoid serum that delivers a 6.5% solution of stabilized retinoid blends and botanical, retinol-alternative extracts into the skin.Key Ingredients:- Retinoid ester blend 5%, liposome-encapsulated retinol blend 1% and 0.5% blue-green algae help reduce the appearance of wrinkles and lines and encourage signs of clearer skin.- CoQ10 improves the appearance of aging or Uv-exposed skin, for a healthier-looking, balanced complexion.- Hawaiian white honey is a pro-skin Sunday Riley A+ High Dose Retinoid Serum 0.5 oz.