What it is
Oligopeptide-34 is a synthetic short-chain peptide from the family of numbered cosmetic oligopeptides. It is added at low levels as a conditioning agent intended to help skin look and feel smooth. In a sunscreen it serves as a supporting care component and does not contribute to UV protection.
Safety & warnings
Low-molecular-weight synthetic peptides at cosmetic use levels are generally well tolerated and are not considered comedogenic. Individual sensitivity remains possible, as with any leave-on ingredient.
Origin & sourcing
Synthetic. It is manufactured through peptide synthesis or biotechnological processes rather than obtained from a botanical or animal source.
Questions everyone asks
Does Oligopeptide-34 provide SPF?
No. It is a conditioning peptide with no UV-filtering activity; protection comes from the dedicated UV filters in the product.
Why is a peptide added to sunscreen?
Brands include peptides like this as supporting skin-conditioning ingredients to round out the overall feel and care claims of a formula.