Caprooyl Tetrapeptide-3 Solution, IO

A peptide aimed at the layer between epidermis and dermis

Most firming peptides are sold with a collagen story. Caprooyl Tetrapeptide-3 Solution takes a slightly different angle: it is marketed around the dermal-epidermal junction, the thin layer that holds the upper and lower skin together and that loses definition as skin matures. Its INCI is Caprooyl Tetrapeptide-3, a four-amino-acid peptide with a caproic acid chain, and the published CAS is 1012317-71-3. This listing is a solution; the full vehicle INCI is confirmed on the CoA for each lot.

A note on the pack

Catalog pack notes for this SKU sometimes show a small liquid fill even though the label style reads 1 g. The live product page shows the pack sizes that are actually offered, so check it before you plan a batch, and use the CoA for appearance.

How it compares

Caprooyl Tetrapeptide-3 Solution is not Palmitoyl Tripeptide-1 + Palmitoyl Tetrapeptide-7 Liquid, which is a palmitoyl two-peptide blend, and it is not a collagen tripeptide either. If you want a classic matrikine instead, Palmitoyl Pentapeptide-4 is the usual choice. Many formulators use Caprooyl Tetrapeptide-3 Solution next to a matrikine so that one product carries two structure stories. Our peptide solutions list the options side by side.

Formulating with Caprooyl Tetrapeptide-3 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-compatible and goes into serums, gels and finished emulsions.

Level

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

Product types that suit it

Firming-look night serums, face and neck creams, jawline gels and mature-skin moisturizers. It suits products for skin that looks less firm and less defined.

Pairing ideas

Matrikine peptides, sodium hyaluronate, ceramides, squalane and niacinamide. Add each active separately and check clarity, odor and viscosity after each addition instead of premixing several actives in one beaker.

Example firming cream architecture

Water, glycerin, an emulsifier system, light emollients, a ceramide blend, Caprooyl Tetrapeptide-3 Solution at the supplier level in cool-down, a chelator and a broad-spectrum preservative. The level comes from the CoA, so no gram recipe is shown.

Claims

Describe skin that looks firmer, more toned and more resilient 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.