A medium-strength anti-ageing retinol serum for those with are introducing retinol into their routine for the first time. Fortified with skin hydrators to smooth lines, reduce pore size and plump skin. By purifying Vitamin A to its most active state, Cosmedix Refine Refinishing Treatment 4% is more readily absorbed and utilized by the skin than other products. This potent, chirally corrected AGP Complex formula restores life to environmentally damaged skin by stimulating cell turnover and improving the appearance of fine lines and wrinkles, in a non-drying formula. Ideal for many skin types and concerns including: problem skin; skin compromised by the sun; melasma and hyperpigmentation; ageing skin, and sensitive skin. Cosmedix Refine Refinishing Treatment 4% hydrates and erases fine lines without inflammation for noticeably improved skin texture.