What it is: A serum featuring pro-strength retinol results with zero side effects.What it does: Formulated with proprietary nondrying, nonirritating deep-release overnight retinol repair (vitamin A) to help firm skin, fade lines and smooth texture. This powerhouse nightly serum is blended with hydrating cross-linked hyaluronic acid filling spheres to boost moisture levels for a consistent, youthful glow. BeautyBio's 'smart' serum tech helps identify and correct damage with boosting stem-cell technology and powerful peptides to enhance skin's natural overnight rejuvenation process. Awake to firmer, healthier-looking skin by morning.Key ingredients:- Leontopod Stem Cell Technology: proprietary technology that organically identifies and repairs damage deep within the skin- ECM Moduline Peptide: stimulates collagen response while you sleep so you can awake to firmer, smoother-looking skin- Konjac root powder: cross-linked HA filling spheres draw from skin's deepest moisture source to fill and plump fine lines and wrinkles- H-Retinoate (retinal): a powerful yet gentle form of retinol that helps repair damage deep within the skinHow to use: For PM use. Cleanse face and pat dry. Massage 1-2 pumps of The Nightly collagen peptide serum onto entire face. Follow with your favorite facial serum or moisturizer. 1 oz.