This product has been discontinued and replaced with Neocutis Bio-Serum FirmNeocutis Bio Serum Intensive Spot Treatment with PSP is a portable pen applicator for stubborn lines and wrinkles. The most intensive Bio-stimulating PSP serum available with an unprecedented concentration of PSP (100%more) to help reduce the signs of aging in as little as 7 days. Clinically effective skin rejuvenating PSP combined with pro-collagen Amino Acids and a Bio-mimetic Peptide to help safeguard collagen and elastin from environmental aggression. Skin plumping Hyaluronic Acid and line softening technology work synergistically to help visibly transform the appearance of skin.Size: 3.8ml / 0.13oz