A three-amino-acid peptide bound to a fatty acid for skin penetration, designed as a messenger rather than a building block.
How it works
The peptide mimics a fragment of the proteins that signal dermal repair. Research associates it with increased markers of collagen I, III and IV and other matrix components in skin models — the basis of its use in firmness-focused formulas, often alongside vitamin C, whose role in collagen synthesis is complementary.
Tolerability
Signal peptides are well tolerated with no photosensitising effect.
Pregnancy and breastfeeding
No established concerns at topical cosmetic levels; conventionally considered suitable.
