Syn-Coll vs Matrixyl: Palmitoyl Tripeptide-5 and Palmitoyl Pentapeptide-4 Compared

Syn-Coll and Matrixyl are both palmitoylated signal peptides used for firmer, smoother looking skin, but they carry different peptides and work through different signals. Syn-Coll is Palmitoyl Tripeptide-5, a lysine, valine, lysine sequence in glycerin and water, used at 1 to 3 percent and designed to mimic thrombospondin-1, while the original Matrixyl is Palmitoyl Pentapeptide-4, the five amino acid Pal-KTTKS in a glycerin gel, used at about 3 percent. Pick Matrixyl when you want the longest independent research trail, and Syn-Coll when you want more peptide per gram of finished product and a different mechanism to add to a multi-peptide serum.

This comparison is written for people who actually weigh and mix raw materials. It covers what each supplier material contains, how much peptide ends up in your bottle at the recommended dose, what the published and supplier studies really show, and how to process and combine the two without guessing.

Two Different Peptides, Two Different Signals

Syn-Coll: a thrombospondin-1 mimic

Syn-Coll was developed by the Swiss peptide maker Pentapharm, which DSM acquired in 2007, so the material now sits in the dsm-firmenich personal care range. The peptide is Palmitoyl Tripeptide-5, chemically palmitoyl lysyl valyl lysine, often shortened to Pal-KVK. The idea behind it comes from matrix biology. Thrombospondin-1 is a protein in the skin's support network that switches the latent, inactive form of TGF-beta into its active form, and TGF-beta is one of the main messengers that tells fibroblasts to make collagen. The thrombospondin motif involved is a short basic sequence, and Pal-KVK was built to imitate that step. The supplier literature therefore positions Syn-Coll as a peptide that supports the skin's own collagen messaging rather than adding collagen to it.

The underlying biology is well documented in cell and animal research, for example the work of Murphy-Ullrich and colleagues on thrombospondin and TGF-beta activation and the TSP-1 knockout mouse study by Crawford and co-authors in Cell in 1998. What is not documented in independent journals is a standalone trial of Pal-KVK itself, a point we come back to below.

Matrixyl: a collagen fragment messenger

Matrixyl was launched by Sederma, now part of Croda, and is the ancestor of most cosmetic peptide marketing. Its peptide is Palmitoyl Pentapeptide-4, Pal-KTTKS, built on the lysine, threonine, threonine, lysine, serine fragment of the type I procollagen propeptide. Work published by Katayama and colleagues in the Journal of Biological Chemistry in 1993 showed that this KTTKS fragment raised production of collagen and fibronectin in cultured fibroblasts, which is the matrikine idea: a piece of broken matrix tells cells to rebuild matrix. The palmitoyl chain was added to make the peptide more lipophilic and easier to hold in a skin care formula.

Do not confuse the original Matrixyl with Matrixyl 3000. The 3000 grade is a different pair of peptides, Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7. We compare that blend with a single tripeptide in our post on Palmitoyl Tripeptide-38 vs Matrixyl 3000, and the matrikine family more broadly in Dermaxyl vs Matrixyl. This article is about Pal-KTTKS only.

What Is in Each Raw Material

Syn-Coll is sold as a clear, glycerin-based water solution. The INCI declaration is Palmitoyl Tripeptide-5, Glycerin and Water, and the original Pentapharm data sheet lists the peptide as a trifluoroacetate salt with CAS 623172-56-5. In the supplier's own clinical cream, 2.5 percent of Syn-Coll was described as delivering 25 ppm of peptide, which means the solution holds roughly 1,000 ppm, or about 0.1 percent, of Palmitoyl Tripeptide-5. Our Syn-Coll card gives the same order, about 900 to 1,300 ppm of active, with a water phase addition below 40 C.

Matrixyl is supplied as an off-white gel. The INCI reads Glycerin, Water, Butylene Glycol, Carbomer, Polysorbate 20 and Palmitoyl Pentapeptide-4, the carbomer being what gives it body. The standard grade carries about 100 ppm of peptide, a tenth of the Syn-Coll figure, and Croda lists a recommended use of 3 percent with an effective pH range of 4.0 to 6.0. We stock the INCI-named Palmitoyl Pentapeptide-4 solution for formulators who want the same peptide in a ready liquid, and Palmitoyl Pentapeptide-4 powder for those who prefer to dose the neat peptide themselves.

The practical result is a big difference in peptide load. Matrixyl at 3 percent puts about 3 ppm of Pal-KTTKS into the finished product, and even at 8 percent, the top of the range quoted by many distributors, it reaches only about 8 ppm. Syn-Coll at 1 percent already gives about 10 ppm, and at 2.5 percent about 25 ppm. That does not make Syn-Coll stronger, because the two peptides act on different steps and were tested at the doses their makers chose, but it is the reason you should always compare by ppm of peptide and not by percent of raw material.

What the Studies Show and What They Do Not

Matrixyl evidence

Matrixyl has the stronger independent record. The study most often cited is Robinson and colleagues, International Journal of Cosmetic Science, 2005. Ninety-three women aged 35 to 55 used a moisturizer with 3 ppm Pal-KTTKS on one side of the face and the same base without peptide on the other, twice a day for twelve weeks. Silicone replica profilometry and expert grading showed less visible wrinkle depth and roughness on the peptide side. The trial was sponsored by Procter and Gamble, used a split face design and a single site, but it is peer reviewed and publicly available, which is more than most cosmetic peptides can claim.

Syn-Coll evidence

The Syn-Coll data come from the supplier. In one in vivo study, 44 women used a placebo cream, a cream with 1 percent Syn-Coll or a cream with 2.5 percent Syn-Coll twice a day for 84 days, and PRIMOS fringe projection measured skin relief. The 2.5 percent cream lowered the average relief and maximum relief parameters by 12 percent. A second supplier study in 60 volunteers compared 2.5 percent Syn-Coll, or 25 ppm of peptide, with a palmitoyl pentapeptide reference at 10 ppm, equal to 10 percent of the commercial Matrixyl type product, again for 84 days, and reported better results for Syn-Coll on all measured parameters.

Read that head-to-head with care. It was run and reported by the Syn-Coll supplier, it has not been published in full in a peer-reviewed journal, and the two peptides were compared at very different ppm levels. Claims you may see online that Syn-Coll makes a fixed percentage more collagen than Matrixyl could not be traced to a primary source in our research, so we do not repeat them. The fair summary is that both have supplier support, Matrixyl also has an independent journal trial, and no independent study ranks one above the other.

Processing, pH and Stability

Both peptides belong in the water phase and both should go in late. Add Syn-Coll or Matrixyl after the emulsion or gel has cooled below 40 C, stir until uniform, then adjust pH. Long heating hurts palmitoylated peptides, and adding them cold also avoids shear damage to the Matrixyl carbomer. Our Syn-Coll card gives a working pH window of 3.0 to 7.0, while the Matrixyl gel is specified for 4.0 to 6.0, so a finished pH around 5.0 to 5.5 suits a formula that contains both.

Because Matrixyl contains carbomer, it adds a little viscosity and needs some neutralization in a very thin serum. If you aim for a water-clear, low viscosity product, Syn-Coll is the easier of the two, since it is a simple glycerin solution. Both materials bring glycerin into the formula, so trim added humectant slightly when you use the higher end of the dose range. Neither peptide has a documented conflict with hyaluronic acid, panthenol, niacinamide, allantoin or common gums. Keep strong acids at low pH, oxidizers and copper-rich ingredients for separate products or run a stability check first, since peptide recovery can drop in those systems.

Store both raw materials cool and closed. Sederma recommends 4 to 7 C long term for its peptide gels, and the Syn-Coll data sheet gives at least one year of shelf life under the stated conditions. Always use the CoA of your actual lot for peptide content and expiry, especially with generic solutions whose ppm can differ from the branded grades.

Using Syn-Coll and Matrixyl Together

Because the two peptides are pitched at different steps of the same collagen story, they are often combined, and many finished serums list both. A sensible frame for a 100 g firming serum is water, 3 to 5 g glycerin, a light gum or hyaluronic acid for slip, 2.5 g Syn-Coll and 3 g Matrixyl type solution, plus a broad spectrum preservative, all peptides added after cooling and the batch adjusted to about pH 5.5. That gives about 25 ppm Pal-KVK and 3 ppm Pal-KTTKS. If you build from INCI-named generics, our Palmitoyl Tripeptide-5 solution and Palmitoyl Pentapeptide-4 solution do the same job, as long as you dose by the ppm on their CoA.

Position the finished product as a cosmetic for the look of firmness and smoothness. Run a preservative challenge test, check color, clarity, viscosity and pH over several weeks at room temperature and at 40 C, and test the product in its final pack. For a wider view of peptide pairings you can browse all peptide solutions in our catalog, and our peptide serum recipe for the look of wrinkles shows a complete worked batch.

Which One Should You Choose

Choose Matrixyl if your label story leans on the most studied cosmetic peptide, if you want a peer-reviewed trial behind the ingredient, or if your customers already search for it by name. Choose Syn-Coll if you want a distinct mechanism next to other matrikines, a higher peptide load at a small dose, or a crystal-clear serum without carbomer. Choose both when you are building a multi-peptide product and want two complementary collagen signals in one bottle. Whatever you choose, compare offers by ppm of peptide, insist on a CoA for the lot, and keep the claims cosmetic.

Frequently asked questions