Tripeptide-32 Good Peptide Anti-Ageing Hydration Tripeptide-32 description A synthetic peptide with the “tri” (meaning three) designation referring to this peptide’s mix of the amino acids proline, serine, and threonine. At this time tripeptide-32, like most other peptides, has theoretical skin-restoring ability and likely serves to bind moisture to skin, but all other fantastic-sounding claims remain in the realm of a petri dish or are simply unproven or unknown. Related ingredients: Peptides