What it is
Hexapeptide-2 is a short, synthetically produced peptide composed of a defined sequence of six amino acids. In sunscreens and treatment products it is included at low concentrations as a skin-conditioning ingredient, marketed as part of peptide-based formulas. Like most cosmetic peptides it is used in the water phase and contributes to the conditioning rather than the protective function of a product.
Safety & warnings
Cosmetic peptides such as hexapeptide-2 are generally well tolerated at the low levels used in formulas. It is not an oil and is not a recognized fragrance allergen, so comedogenicity and fragrance-allergen concerns do not apply; isolated individual sensitivity is possible as with any ingredient.
Origin & sourcing
It is a synthetic ingredient manufactured by controlled peptide synthesis to produce a consistent, defined amino-acid sequence.
Questions everyone asks
What is hexapeptide-2?
It is a synthetic peptide made of six amino acids, used in cosmetics as a skin-conditioning ingredient.
Why is it added to sunscreen?
It is included as a conditioning component of peptide-focused formulas rather than for UV protection itself.