Active ingredient
Tetrapeptide
INCITetrapeptide-21
What it is
Tetrapeptide-21 is a four-amino-acid peptide (sequence GEKG) used in age-care formulas to support the look of firmness and elasticity. It is valued for helping the skin appear smoother and more even over continued use.
Mechanism in detail
What Tetrapeptide does
This peptide helps support the appearance of the skin's structural network, reinforcing a firmer, smoother look.
Where it helps
Concerns Tetrapeptide addresses
Aging
The first time you notice it is rarely a wrinkle. It is a quality of light — the way your skin catches it differently in a morning mirror,…
Explore the concernSun Damage
Sun damage is the cumulative photoaging caused by ultraviolet radiation, presenting as solar lentigines, irregular pigmentation, fine…
Explore the concern
From the BIOSAR catalog
