Myristoyl Tripeptide-31 is a lipidated signal peptide used in cosmetic formulations to support skin firmness and reduce the appearance of fine lines, theorized to modulate cellular signaling and extracellular matrix proteins. Clinical data are limited and largely manufacturer-derived.
| Reported effect | How often | Notes |
|---|---|---|
| Mild transient irritation or redness | Rare | Generally well tolerated; irritation more often linked to other formulation components. |
| Contact sensitization or allergic reaction | Very rare | Peptides have low sensitizing potential, but individual hypersensitivity is possible. |
| Stinging or itching at application site | Rare | Usually mild and self-limiting. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.