What it is
Dipeptide-4 is a short synthetic peptide built from two amino acid residues. It is formulated into serums, creams, and sunscreens as a conditioning ingredient, typically at low concentration and often in combination with other peptides. It is water-soluble.
Safety & warnings
Low-molecular-weight synthetic peptides used at the small concentrations typical of cosmetics are generally well tolerated, with low expected irritation or sensitization potential. It is not oil-based and is not considered comedogenic.
Origin & sourcing
Synthetic, manufactured by peptide synthesis.
Questions everyone asks
What does Dipeptide-4 do in a product?
It acts as a skin-conditioning peptide, contributing to the overall feel and supportive claims of the formula.
Is Dipeptide-4 a sunscreen active?
No. It is not a UV filter and does not absorb or reflect UV; it is an auxiliary conditioning ingredient.