This potent serum features a 0.1% concentration of PSP to visibly firm, smooth and lift aging skin. The spectacular formulation provides vitamin C to brighten and lock in collagen and a bio-mimetic tri-peptide to prevent collagen and elastin degradation. Algae tightens and smoothes, hyaluronic acid plumps and softens, and essential amino acids replenish the skin. The complexion becomes younger in both tone and texture. Suitable for all skin types.