Ultimate Boost Serum is a lightweight, fast-absorbing booster that helps visibly smooth fine lines, firm the look of skin, and deliver lasting hydration for a brighter, more youthful appearance. Worn under moisturizer, it supports the skins natural moisture barrier to soften texture and promote healthier-looking skin.A clinically proven peptide complex (MATRIXYL Synthe6) works alongside sodium hyaluronate, niacinamide, glutathione, and tetrapeptide-14 to improve the look of firmness and resilience, while antioxidant-rich tea extracts, Boswellia serrata, and honey help soothe and protect. The clean, dye- and sulfate-free formula is made without artificial fragrance, parabens, and is cruelty-free.