Beyond Hydrating serum (27ml):The Theory’s Beyond Hydrating Serum is formulated with Provitamin B5 and 1% multi-molecular weight Hyaluronic Acid, ranging from 2-3000 kDa. The smaller molecules penetrate to hydrate the deeper layers of skin whereas the larger molecules strengthen skin barrier to lock in the moisture and provide multi-level hydration. Paired with our Firming, Glow, and Repair Boosters, it maintains elasticity, repairs and rejuvenates skin, and brightens it for a healthy glow.