Eye Lash Hexa Peptide

A lash peptide built on a six-amino-acid chain

Lash and brow serums are one of the few product types built almost entirely around peptides, and this is one of the two classic actives for them. Eye Lash Hexa Peptide is a solution of Myristoyl Hexapeptide-16. The catalog INCI is Water, Glycerin, Myristoyl Hexapeptide-16. Because it is a blend, CAS is Mixture; the peptide itself carries CAS 959610-54-9. It is a viscous liquid, and the CoA confirms appearance for each lot.

Hexa or penta

The sister listing, Eye Lash Penta Peptide, is Myristoyl Pentapeptide-17. Both carry a myristic acid chain, which helps the short peptide settle onto the lash line, and both are used in the same kind of product. They are different sequences, so many brands use both in one serum. Acetyl Tetrapeptide-3 + Red Clover Extract Hair Complex is a separate scalp and hair complex and is not a substitute for either. More lash options sit in our peptide solutions.

Formulating a lash serum

Phase and temperature

Add it in cool-down, below 40 °C, with gentle mixing, and avoid long holds at high temperature. The solution mixes into water-based gels. Because it is already viscous, premix it with a little of the gel before adding it to the rest of the batch.

Level

Take the use level from the supplier documentation for your lot.

Base and packaging

Most lash serums are clear, light gels built on water, glycerin or butylene glycol and a small amount of polymer. Keep the base fragrance-free and very gentle, since it is applied right at the lash line. Fill into a tube with a fine brush applicator.

Product types that suit it

Lash serums, brow gels, tinted brow mascaras with a care story and overnight lash conditioners. It can also be added to a clear mascara base for a conditioning claim.

Pairing ideas

Panthenol, biotin-type peptides, sodium hyaluronate and the penta lash peptide are common partners. Add each active separately and check clarity, odor and viscosity after each addition instead of premixing several actives in one beaker.

Claims

Keep claims to appearance: lashes and brows look longer, fuller and better conditioned with regular use. Avoid claims about hair cycles. Keep claims cosmetic and tied to appearance. Any before-and-after statement needs a test on the finished product, not on the raw material.

Eye-area safety

Run your eye-area safety assessment and preservative challenge test on the finished product before launch. Tell consumers to avoid getting the serum in the eye.

Testing the finished product

Run a stability check on the finished product at room temperature, at 40 °C and in a fridge for several weeks, and watch color, odor, clarity, viscosity and pH. Check the product in its final pack too, since pumps, droppers and jars expose it to air differently. A preservative challenge test on the final product is the standard step before launch.

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, and respect the shelf life on the CoA.

Ordering

It is sold as a raw material for cosmetic formulation, not as a finished consumer product. Start with a small pack for bench trials and scale once your stability checks pass. 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 $50 or more.