Ingredient review
Myristoyl Pentapeptide-17
INCI: MYRISTOYL PENTAPEPTIDE-17
A synthetic peptide that may help improve skin firmness and reduce fine lines, but research is still emerging.
In plain English
Myristoyl Pentapeptide-17 is a lab-made protein fragment (peptide) that is added to skincare products to signal skin cells to produce more collagen and elastin. Think of it as a tiny messenger that tells your skin to act younger and firmer. It's often used in anti-aging formulas, especially around the eyes and on the face.
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-17 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-17.
- 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 pentapeptide (a chain of five amino acids) attached to a myristoyl fatty acid chain, which helps it penetrate the skin more easily. It is designed to mimic natural peptide signals that stimulate collagen production.
How it works
When applied topically, the myristoyl group helps the peptide absorb into the upper layers of skin. Once inside, it signals fibroblasts (the cells that make collagen) to increase collagen and elastin production, which can improve skin firmness and reduce the appearance of fine lines over time.
Pros
Gentle collagen support
Myristoyl Pentapeptide-17 is a mild ingredient that signals collagen production without causing irritation, making it suitable for sensitive skin types.
Targeted anti-aging
It is often used in eye creams and serums to address fine lines around delicate areas, where stronger actives might be too harsh.
Cons and cautions
Slow results
Peptides work gradually, and visible improvements in skin firmness or wrinkles may take several weeks to months of consistent use.
Limited evidence
While lab studies show promise, there are fewer large-scale human trials for this specific peptide compared to more established anti-aging ingredients like retinoids.
Best for
- People looking for anti-aging support without harsh actives
- Those with sensitive skin who want a gentle collagen-boosting ingredient
Use caution if
- Individuals with known allergies to synthetic peptides (rare)
- Those expecting immediate results (peptides work gradually)
Usage tips
Safety summary
Myristoyl Pentapeptide-17 is considered safe for topical use in cosmetics at typical concentrations. Irritation and allergic reactions are rare. As with any new ingredient, a patch test is recommended.
Research notes
Research on this specific peptide is limited but suggests it can stimulate collagen synthesis in vitro. Human studies are sparse, but anecdotal and preliminary evidence supports its anti-aging potential.
Common label clues
- Typical concentration
- 0.001% to 0.01%
- Regulatory status
- Approved as a cosmetic ingredient in the US, EU, and many other regions. Not classified as a drug.
- Common uses
- Anti-aging serums, Eye creams, Facial moisturizers
- Environmental note
- Synthetic peptides are produced in labs, which reduces the need for animal-derived ingredients, but their manufacturing may involve chemical solvents.
Good to know
- Peptides are often listed near the end of ingredient lists because they are effective at very low concentrations.
- Myristoyl Pentapeptide-17 is sometimes confused with Palmitoyl Pentapeptide-4, but they are different molecules.
Common questions
What is Myristoyl Pentapeptide-17 in beauty products?
Myristoyl Pentapeptide-17 is a lab-made protein fragment (peptide) that is added to skincare products to signal skin cells to produce more collagen and elastin. Think of it as a tiny messenger that tells your skin to act younger and firmer. It's often used in anti-aging formulas, especially around the eyes and on the face.
What does Myristoyl Pentapeptide-17 do in a beauty product?
When applied topically, the myristoyl group helps the peptide absorb into the upper layers of skin. Once inside, it signals fibroblasts (the cells that make collagen) to increase collagen and elastin production, which can improve skin firmness and reduce the appearance of fine lines over time.
Is Myristoyl Pentapeptide-17 safe for most people?
Myristoyl Pentapeptide-17 is considered safe for topical use in cosmetics at typical concentrations. Irritation and allergic reactions are rare. As with any new ingredient, a patch test is recommended.
Who should be careful with Myristoyl Pentapeptide-17?
Individuals with known allergies to synthetic peptides (rare) Those expecting immediate results (peptides work gradually)
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.