Acetyl Hexapeptide-8 Solution, IO

Acetyl Hexapeptide-8 Solution is the trade name for Acetyl Hexapeptide-8, a peptide that older documents list as Acetyl Hexapeptide-3.

The peptide that made expression lines a category

Before Acetyl Hexapeptide-8 Solution, peptides in skin care were mostly about collagen. This hexapeptide gave brands a new story, the look of lines that come from repeated facial expressions, and it is still the first peptide many formulators buy. This page is classic Acetyl Hexapeptide-8 Solution. Its INCI is Acetyl Hexapeptide-8 and the published CAS is 616204-22-9. The vehicle often lists water and a preservative, and the full INCI and active content are confirmed on the CoA for each lot.

Choosing the right grade

We list several pages in this family. Acetyl Hexapeptide-8 Solution Amplified is the higher-strength grade. Acetyl Hexapeptide-8 is the same active class sold under its INCI name. Acetyl Octapeptide-3 Solution, Acetyl Octapeptide-3, is a longer peptide and not this hexapeptide. Each has its own CoA, so a switch between them needs a fresh stability check. The full range sits in our peptide solutions.

Formulating with Acetyl Hexapeptide-8 Solution

Phase and temperature

Add it in cool-down, below 40 °C, with gentle mixing, and avoid long holds at high temperature. It is water-soluble and goes into serums, toners, gels and finished emulsions.

Level

This card does not state a use percentage, so follow the CoA and the supplier documentation for the level.

Compatibility

Mild, water-rich bases suit it best. Avoid pairing it with strong acid exfoliants in one product.

Product types that suit it

Forehead and frown-line serums, crow's-feet eye creams, smoothing primers, sheet-mask essences and day creams that carry an expression-line claim.

Pairing ideas

Pentapeptide-18 and Acetyl Octapeptide-3 build a multi-peptide serum. Sodium hyaluronate adds a plumper look, and caffeine is common in eye gels. Add each active separately and check clarity, odor and viscosity after each addition instead of premixing several actives in one beaker.

Example serum architecture

Water, glycerin, sodium hyaluronate, a light polymer, Acetyl Hexapeptide-8 Solution at the supplier level, panthenol, a chelator and a broad-spectrum preservative. No gram recipe is shown because the level comes from the CoA.

Claims

Describe expression lines that look softer and skin that looks smoother with regular use. Keep claims cosmetic and tied to appearance. Any before-and-after statement needs a test on the finished product, not on the raw material.

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.