Myristoyl Tripeptide-31
A lipidated tripeptide. The maker links it to firmness and smoother texture; independent data are limited. Well tolerated.
Evidence by route
Topical application
A peptide active. Well tolerated; data limited.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Myristoyl Tripeptide-31 is a short tripeptide bound to myristic acid, a modification that improves its lipid affinity and penetration into the stratum corneum. In a formula it is presented as a signaling peptide, and the manufacturer links it to firmness and a more even texture. A caveat is in order: most of the data come from the supplier and independent evidence is scarce. The logic of signaling peptides is reasonable, but published clinical support for this specific peptide is limited. It is fairer to see it as a supporting anti-aging active with modest backing, not a guaranteed result. Topically the systemic contribution is negligible, so it can be used during pregnancy and breastfeeding. Tolerance is good: low irritation and allergy, suitable for sensitive skin. It has no meaningful comedogenic profile, so it fits any skin type within an anti-aging routine.
Frequently asked questions
Is Myristoyl Tripeptide-31 safe during pregnancy?
Myristoyl Tripeptide-31 is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Myristoyl Tripeptide-31 for?
Myristoyl Tripeptide-31 suits: normal, dry, combination, oily, sensitive.
What is Myristoyl Tripeptide-31 and what does it do in cosmetics?
A lipidated tripeptide.
What's the INCI name for Myristoyl Tripeptide-31?
The INCI name is Myristoyl Tripeptide-31.
See Myristoyl Tripeptide-31 in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Similar role in the formula
Explore by category
Published: · updated: