Acetyl Tetrapeptide-2 Solution

Acetyl Tetrapeptide-2 is sold here under its INCI name. Related firming peptides include Thymulen 4 and Palmitoyl Tripeptide-1 + Palmitoyl Tetrapeptide-7 Liquid.

The INCI-named Acetyl Tetrapeptide-2

This listing is the INCI-named solution of Acetyl Tetrapeptide-2, CAS 757942-88-4, for firming and elasticity leave-on products. Trade literature links this sequence to firming stories for skin that looks less dense and less bouncy, not to the expression-line hexapeptides. The full vehicle INCI is confirmed on the CoA for each lot.

INCI listing or trade-name listing?

The same peptide is also sold as Thymulen 4 Peptide. Buying by INCI is often simpler for brands that want their purchasing documents, label and formula sheet to show the same name. For new projects, compare the two CoAs and choose by vehicle and documentation; do not swap them at the same percentage without checking active content.

Formulating with Acetyl Tetrapeptide-2

Process

Add the solution to the water phase during cool-down, below 40 °C, and mix gently.

Bases

Firming serums, neck and décolleté creams and rich night creams are typical. The peptide is water-soluble and easy to place in both gels and emulsions. Record pH and viscosity before and after addition. Take the use level from the supplier documentation for your lot.

Pairing ideas

Combine with a matrikine such as Palmitoyl Pentapeptide-4 for a two-peptide firming formula, and with hyaluronic acid for a plump-looking finish. For an eye cream, a separate eye peptide such as Acetyl Tetrapeptide-5 covers the look of puffiness. Add each peptide separately in cool-down.

Example: firming night cream architecture

A firming night cream could combine an emulsion with a moderate oil phase, glycerin, Acetyl Tetrapeptide-2, a matrikine and a hydrating polysaccharide, with a preservative validated for the full formula. Exact levels come from the supplier documentation. A cushioned texture and an airless jar or pump suit the format.

Claims

Keep claims cosmetic: firmer-looking, more elastic-feeling skin with a smoother look. Avoid wording about immune function or changes inside the skin.

Stability and storage

Run stability at room temperature and 40 °C in the final packaging. Store tightly closed, cool and away from light, and refrigerate opened material where practical. Keep the CoA with your batch records.

Building a neck and décolleté range

Neck and décolleté products are a growing category, and firming peptides like Acetyl Tetrapeptide-2 are a natural fit. A range might include a light daytime fluid and a richer night cream, both carrying the same peptide so the story stays consistent. The skin of the neck tends to feel drier than the face, so emollients and humectants matter as much as the active.

Lot documentation

Record appearance and pH on arrival and compare them with the CoA. If you buy both this listing and Thymulen 4, keep their CoAs separate and note which one each batch used.

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 $50 or more. Compare all peptide solutions.