Myristoyl pentapeptide-17
Cosmetic ingredientCosmetic lipopeptide ingredient
Also known as: SymPeptide 226EL, lash peptide
Very thin human evidence
- Regulatory standing. Cosmetic ingredient, not regulated as a drug
- Anecdotal. Community reports, no controlled data
- No registered human trials. Nothing registered on ClinicalTrials.gov
- No sources. Nothing cited to verify
Computed with the same four public criteria as every profile. The human-evidence grade on an indexed profile is set automatically and may change when it is hand-reviewed. It is not a safety score, not a purity rating, and not medical advice, and not a claim that this compound treats, cures, or prevents any condition.
What it is
Myristoyl pentapeptide-17 is a short synthetic peptide of five amino acids attached to myristic acid, a fatty acid that is added to help it penetrate the skin. It is sold as a cosmetic ingredient, often under the trade name SymPeptide 226EL, and appears mainly in eyelash and eyebrow serums. Manufacturers describe it as stimulating keratin-related genes in hair follicles, but this mechanism is not well documented in independent research.
What the evidence shows
There are no registered human trials and no indexed published papers, so claims about longer or thicker lashes rest mainly on manufacturer data and user reports. It is regulated as a cosmetic ingredient and is not FDA-approved for any use.
Registered human trials
Live from ClinicalTrials.gov, refreshed daily.
Sources
Risks, side effects and study doses are only published on hand-reviewed profiles. Want this one reviewed, or spotted something wrong? Tell us.