This three-in-one serum works to hydrate, plump, and firm your skin with a blend of peptides, hyaluronic acid, and cactus stem extract.This three-in-one serum works to hydrate, plump, and firm your skin with a blend of peptides, hyaluronic acid, and cactus stem extract. Youth To The People’s modern skincare line is driven by unconventional superfoods backed by innovative science to offer farm-to-vanity elixirs that work wonders on your skin.