XLash Peptide

A lash and brow peptide

XLash Peptide is a Myristoyl Pentapeptide-17 solution for lash and brow serums. The catalog INCI is Water, Glycerin, Myristoyl Pentapeptide-17. CAS is Mixture for the solution, with Myristoyl Pentapeptide-17 listed as 959610-30-1. This lipopeptide is one of the best-known actives in cosmetic lash conditioners.

Three listings of the same peptide

The catalog carries Myristoyl Pentapeptide-17 as XLash Peptide, as Eye Lash Penta Peptide and as the INCI-named Myristoyl Pentapeptide-17 solution, plus a powder. Solutions share the peptide but can differ in vehicle and active content. Stay with the listing named on your formula sheet, or compare CoAs for a new project.

Formulating a lash serum

Base

Lash serums are applied along the lash line with a fine brush, so the base must be thin, quick-drying and gentle. A clear water-gel with a little glycerin and a mild preservative validated for the eye area is typical.

Process

Add the solution during cool-down, below 40 °C, and mix gently. Record clarity, viscosity and pH. Take the use level from the supplier documentation for your lot.

Pairing ideas

Lash serums often pair Myristoyl Pentapeptide-17 with Biotinoyl Tripeptide-1 and panthenol for a conditioning story. The hexapeptide sister, Myristoyl Hexapeptide-16, is another common partner. Add each active separately in cool-down.

Example: lash and brow serum architecture

Water, glycerin, a thin gel former, XLash Peptide, Biotinoyl Tripeptide-1 and panthenol, with a preservative validated for eye products. Exact levels come from the supplier documentation. A fine brush applicator in a slim tube suits daily use along the lash line.

Claims

Keep claims cosmetic: longer-looking, fuller-looking, darker-looking lashes and brows, with results described as appearance after regular use.

Lot handling and storage

Record appearance and pH on arrival, compare them with the CoA, and keep the CoA with your batch records so each finished batch can be traced to its lot. Store tightly closed, cool and away from light.

Applicator and safety notes

Lash products sit close to the eye, so the applicator matters. A fine brush that holds a small amount of serum limits the risk of product running into the eye. Instructions should tell people to apply to clean, dry lash lines and to stop use if irritation occurs. Plan eye-area tolerance testing on the finished product before launch, and keep the formula free of fragrance.

Ordering

It ships from Florida, usually within 1 to 2 business days, in the pack sizes shown above, and US shipping is free on orders of $35 or more. Compare all peptide solutions.