What it is
Hexapeptide-9 is a short synthetic peptide composed of six amino acid residues, manufactured through peptide synthesis. It is incorporated into serums, moisturizers, and sun care products as a conditioning agent associated with the appearance of smoother, more even-looking skin. Because peptides are sensitive to formulation conditions, it is typically used at low levels in the water phase.
Safety & warnings
Short synthetic peptides like hexapeptide-9 are generally well tolerated at the low concentrations used in cosmetics. They are water-soluble and not considered comedogenic. It is not a known fragrance allergen.
Origin & sourcing
Synthetic. It is produced by controlled chemical synthesis that links specific amino acids in a defined sequence.
Questions everyone asks
What is hexapeptide-9?
It is a synthetic peptide made of six amino acids, used as a skin-conditioning ingredient in cosmetic formulas.
Does hexapeptide-9 provide sun protection?
No. It is a conditioning peptide and does not act as a UV filter; sun protection comes from the dedicated filters in the formula.