Ingredient
SH-Polypeptide-121 (HumaColl21)
INCI name: SH-Polypeptide-121
HumaColl21
Recombinant Human Collagen Type XXI
What it is
A single-chain recombinant peptide matching a fragment of human collagen type XXI, produced by microbial fermentation. It is used in anti-aging serums aimed at supporting the skin's own collagen-related processes.
How it works
Its amino-acid sequence mirrors a native human collagen fragment and is intended to interact with skin fibroblasts, while also forming a light conditioning film on application.
What it does
Skin conditioning
Film forming
Concerns to know
-
Well tolerated
No significant safety concern is reported for this ingredient as used in cosmetics.