The combination of retinol and peptides provides a revitalizing effect on the skin, resulting in firmer skin and a reduction in fine lines and wrinkles. Get ready to reveal a softer, smoother, and more radiant complexion with the Retinol Peptide Youth Serum. ​ Complimentary products: Essential B5 Hydrating Serum Stem Cell Rebuilding Complex Stem Cell 3D HydraFirm Stem Cell 3D Complex Nourishing Peptide Cream Nourishing Peptide Rich For nighttime use only. After cleansing, apply serum avoiding the eye area. Wash hands after application and apply moisturizer. As tolerated by the skin, allow for acclimation by using the serum on non-consecutive days as followed: Week 1: Use for 1 day Week 2: Use for 2 days with a 2-day rest between each use Week 3: Use 3 days with a 1-day rest between each use Week 4 & on: Use for 4 days each week with a 1-day rest between each use