This is what no body oil or plain tallow balm can do. Copper peptide boosts your skin's own collagen, the support that keeps it smooth and firm. In a 12-week study, 70% of women made more collagen with it, compared with 40% using retinoic acid, the prescription-strength form of retinol. Your body makes copper peptide itself, but by 60 your levels have dropped by more than half. This balm puts it back. No burn. No sting. No "adjustment period."