Myristoyl Pentapeptide-17
The lash-boosting peptide behind many brow and lash serums—often listed as Myristoyl Pentapeptide-17.
Back to all peptides
✨ real molecule sketch
Spotted this on a label?
Lash peptide
That’s the INCI name—the official way it appears on the back of your serum or cream. Same ingredient, different marketing names.
Structure (cute edition)
✨ real molecule sketch
Myristoyl Pentapeptide-17 is the product of the reaction of myristic acid and Pentapeptide-17.
INCI: MYRISTOYL PENTAPEPTIDE-17 · ~5 amino acids in our simplified view
What brands say it does
Brands use this peptide to extend the growth phase of lashes and brows. It is a supporting cosmetic active—helpful in a consistent routine, not a prescription lash drug.
Where you’ll find it
Lash serums, brow gels, and dual lash-brow treatments (e.g. peptide lash boosters at Ulta/Sephora).
Other names you might see
Lash peptide
Educational only—not medical advice. Hair loss has many causes; see a dermatologist or trichologist for persistent thinning.