Size: 30 ml / 1 fl ozFight the common signs of skin aging all day with this wrinkle-resistant serum by Peter Thomas Roth, the best anti aging skin care line. This wrinkle-fighting complex of 21 peptides and neuropeptides with two gamma proteins helps skin appear noticeably younger. Peptide 21 Wrinkle Resist Serum will make your skin appear noticeably younger, without harsh chemicals. Use this serum as part of your daily skin care routine, and say goodbye to dryness, loss of elasticity and pesky wrinkles.