What It Is: A gentle yet effective evening Retinoid treatment containing Oskia's advanced Super-Nutrient Retinoid Complex (Retinoid, Vitamin C & E and Pro-Vitamin D3) with high concentrations of cellular nutrients, plus botanical actives and key antioxidants to help maintain a firm, plump, youthful and healthy-looking complexion. What It Does: Non-greasy and deeply penetrating, use this super-charged serum as part of your evening routine. Oskia's Retinoid also comes in a stronger strength (Level