Ingredient review
Myristoyl Pentapeptide-15
INCI: MYRISTOYL PENTAPEPTIDE-15
A lab-made peptide that signals skin to produce more collagen, helping smooth fine lines over time.
In plain English
Myristoyl Pentapeptide-15 is a small protein fragment (a peptide) attached to a fatty acid (myristic acid) to help it absorb into skin. Once inside, it mimics a natural signal that tells skin cells to make more collagen and other supportive proteins. This can gradually improve skin firmness and soften the look of wrinkles, but results take weeks of consistent use.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Myristoyl Pentapeptide-15 is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Myristoyl Pentapeptide-15.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic peptide—a short chain of amino acids—chemically bonded to myristic acid, a fatty acid that enhances skin penetration. It is designed to mimic a fragment of collagen that naturally triggers repair signals in the skin.
How it works
After application, the myristoyl group helps the peptide slip through the outer skin barrier. Inside, the pentapeptide sequence binds to receptors on fibroblasts (collagen-making cells), stimulating them to produce more collagen, elastin, and other matrix proteins. This helps plump the skin and reduce the appearance of fine lines over time.
Pros
Gentle anti-aging support
Unlike stronger actives like retinoids, this peptide rarely causes irritation, making it suitable for sensitive skin types.
Backed by peptide science
Peptides are a well-researched class of ingredients; this specific peptide is designed to mimic natural collagen fragments to encourage skin repair.
Cons and cautions
Slow, subtle results
You won't see dramatic changes overnight. Visible improvements typically take 4–8 weeks of twice-daily use.
Dependent on formulation
The peptide's effectiveness relies on the product's delivery system and pH; not all products deliver it effectively to deeper skin layers.
Best for
- Adults looking to soften early signs of aging like fine lines
- Those with sensitive skin who want a gentle anti-aging option
Use caution if
- Anyone allergic to any component of the peptide or formulation
Usage tips
Safety summary
Myristoyl Pentapeptide-15 is considered safe for cosmetic use at typical concentrations. It has a low irritation and comedogenic risk. No significant safety concerns have been reported in available literature.
Research notes
Peptides in general have moderate evidence supporting their ability to stimulate collagen synthesis in vitro and in small clinical studies. However, specific large-scale, peer-reviewed human trials for Myristoyl Pentapeptide-15 are limited. Most evidence comes from ingredient supplier studies and broader peptide research.
Common label clues
- Typical concentration
- 0.0001% to 0.001% (very low, as peptides are potent at tiny amounts)
- Regulatory status
- Approved as a cosmetic ingredient in the US, EU, and other major markets. Not classified as a drug; it is not intended to treat or prevent disease.
- Common uses
- Anti-aging serums, Eye creams, Facial moisturizers
- Environmental note
- Synthetically produced, so it does not rely on animal or plant harvesting. Its environmental impact is primarily tied to the manufacturing process.
Good to know
- Myristoyl Pentapeptide-15 is often listed near the end of ingredient lists because it's effective at very low concentrations.
- It is not the same as 'copper peptides'—those contain copper ions and work differently.
Common questions
What is Myristoyl Pentapeptide-15 in beauty products?
Myristoyl Pentapeptide-15 is a small protein fragment (a peptide) attached to a fatty acid (myristic acid) to help it absorb into skin. Once inside, it mimics a natural signal that tells skin cells to make more collagen and other supportive proteins. This can gradually improve skin firmness and soften the look of wrinkles, but results take weeks of consistent use.
What does Myristoyl Pentapeptide-15 do in a beauty product?
After application, the myristoyl group helps the peptide slip through the outer skin barrier. Inside, the pentapeptide sequence binds to receptors on fibroblasts (collagen-making cells), stimulating them to produce more collagen, elastin, and other matrix proteins. This helps plump the skin and reduce the appearance of fine lines over time.
Is Myristoyl Pentapeptide-15 safe for most people?
Myristoyl Pentapeptide-15 is considered safe for cosmetic use at typical concentrations. It has a low irritation and comedogenic risk. No significant safety concerns have been reported in available literature.
Who should be careful with Myristoyl Pentapeptide-15?
Anyone allergic to any component of the peptide or formulation
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.