/ Retinol Serum is a retinol booster that enhances the benefits of skin microcrudence with vitamin A in longevity and youthful look of the skin. It can be gradually integrated into the evening routine when the skin is adapted to STEP 3 of Step Up System (Avst 3 or C-Quence 3 or A, C, E Body Oil Forte). Retinol Serum combines retinol along with 2 forms of retinoids, antioxidants and components of reinforcing the skin barrier for oxidative stress. When the skin is adapted to the Retinol Serum serum, Step Up to Retinol Serum Forte serum. Request guidance from a certified Environ Skincare Expert to recommend the ideal skincare routine your skin needs at this time for beautiful skin for a lifetime. (30 ml)