Matrixyl: Reference Overview and Reconstitution Notes

Matrixyl

What it is

Matrixyl is a trade name introduced by Sederma for lipidated signal peptides known as matrikines, most commonly palmitoyl pentapeptide-4 (Pal-KTTKS). The related complex marketed as Matrixyl 3000 pairs palmitoyl tripeptide-1 with palmitoyl tetrapeptide-7. In each case a short peptide sequence is attached to a palmitic acid (16-carbon) chain to help the molecule cross the lipid layers of the skin.

Research context and categorization

Matrixyl falls into the skin and cosmetic (anti-aging) category. It is a matrikine, meaning it is designed to resemble fragments released during collagen turnover, which are thought to act as messengers to skin fibroblast cells. In topical cosmetic literature it is commonly discussed in relation to collagen and elastin signaling, and it is investigated for its association with the appearance of fine lines and skin firmness. Published reviews of topical use report modest effects, and these cosmetic uses are not the same as an approved therapeutic claim. Because Matrixyl is handled as a cosmetic active rather than an approved drug, any uses described here should be treated as investigational and not confirmed or approved outcomes.

Status

  • Regulatory status: Research-only in this context. Matrixyl is regulated as a cosmetic ingredient (reviewed by the Cosmetic Ingredient Review panel and permitted for cosmetic use in the US and EU) and is not an FDA-approved drug for any medical indication.
  • Sport status: Not specifically listed on the WADA Prohibited List. Matrixyl is a topically applied cosmetic peptide and does not appear as a named substance or class on the list. This is general reference information and not a competition-eligibility ruling, so athletes should confirm current status with their governing body.

Reconstitution notes (general)

For lyophilized research peptides, concentration equals the milligrams of peptide in the vial divided by the millilitres of bacteriostatic water added. A simple planning calculator is linked at our reconstitution and blend calculators. Matrixyl is a special case, described below, because it is usually not supplied as a dry powder for reconstitution.

Dilution and handling notes (compound-specific)

Matrixyl is generally not a reconstituted lyophilized powder intended for injection. It is a topical cosmetic active and is most often supplied ready to use as a water-soluble, glycerin-based gel or as an aqueous solution that is simply blended into a water-based serum. Typical finished cosmetic formulas use it in a roughly 3 to 5 percent range, with some references going higher, and the water-soluble form disperses readily without a separate reconstitution step. When a raw peptide grade is instead supplied as a solid, it is dissolved into a water or water-and-humectant base (for example with glycerin or hyaluronic acid) and added gradually in small test batches, because the amphiphilic Pal-KTTKS molecule (water-loving peptide, oil-loving palmitoyl tail) can be slow to wet and may look hazy or gel when pushed to high concentration in plain water. A co-solvent such as glycerin or ethanol and gentle warming are the usual practical fixes. There are no bacteriostatic-water reconstitution or injection steps for the standard cosmetic material.

Handling and storage

Store refrigerated at 2 to 8 C, out of direct light. If working from a stoppered vial, wipe the stopper with alcohol before access and label the vial with the mix or open date. Treat a prepared aqueous mixture as short-lived, with a working window of roughly four weeks under refrigeration, and discard the material if it turns cloudy, changes color, or shows floaters or particulates, judging against how the solution looked when freshly prepared since this peptide can appear slightly hazy from its amphiphilic nature.

Related reading

Tools and supplies

For laboratory and research reference only. Educational content, not medical, dosing, injection, or therapeutic guidance, and not intended for human or animal use. Any research uses described are investigational and not confirmed or approved benefits. Confirm anything involving health with a licensed professional. References linked above.