What it is
Tripeptide-1 is a three-amino-acid peptide (glycine, histidine, and lysine) included in cosmetics for its skin-conditioning role. It is water-soluble and typically used at low concentrations as part of an overall conditioning system. In sunscreens it appears as a supporting conditioning ingredient rather than as a UV filter.
Safety & warnings
Short peptides such as Tripeptide-1 are generally well tolerated at the low levels used in cosmetics. It is not a known fragrance allergen and is not associated with comedogenicity.
Origin & sourcing
Synthetic; produced by peptide synthesis to yield a defined sequence of three amino acids.
Questions everyone asks
What is Tripeptide-1?
It is a synthetic peptide built from three amino acids, used as a skin-conditioning ingredient in cosmetics.
Does it provide sun protection?
No. It is a conditioning ingredient and does not act as a UV filter.