This star performer contains a high level of our exclusive Ultra-RETITM long-life pure retinol Microparticles, an advanced retinol stabilisation and delivery technology. Developed to support skin's own production of collagen and elastin, this skin perfecting serum plumps the skin to significantly improve the appearance of fine lines and wrinkles. Featuring pure Retinol, supported by the action of Pro-Vitamin C and the enzyme Bromelain, this formula has been scientifically proven to refine and improve the appearance of skin clarity, texture, hyperpigmentation and imperfections. A powerful complex of calming ingredients supports retinol tolerance by all skin types. Allows users of pure retinol to experience optimal benefits while minimising potential for irritation usually associated with retinol use. Suitable only for skin pre-conditioned with Ultra A Skin Perfecting Serum Mild.