PRODUCT REVIEW
Timeless Skin Care Matrixyl Synthe'6 Serum
A single peptide, Matrixyl Synthe'6, claimed at 2% for $29 — with one label discrepancy worth knowing about.
Key facts
Timeless Skin Care Matrixyl Synthe'6 Serum at a glance.
Palmitoyl tripeptide-38 (Matrixyl Synthe'6), 2% claimed
Key active
Lightweight serum
Texture
Anyone wanting one peptide rather than a blend
Best for
$25–$29
Approximate price
Fragrance free
Fragrance
1 oz
Size
$28.95
Price
Serum
Type
What is it?
Top things to know about Timeless Skin Care Matrixyl Synthe'6 Serum
- Timeless Skin Care Matrixyl Synthe'6 Serum is a thin, fragrance-free serum sold online for around $29. It is a single-ingredient product — no antioxidants, barrier lipids or exfoliants — an addition to a routine, not a routine of its own.
- Eight ingredients. Palmitoyl tripeptide-38, sold as Matrixyl Synthe'6, is the peptide, claimed at 2 percent. Hydroxypropyl cyclodextrin is a carrier that holds it in solution, glycerin and hyaluronic acid pull water into the outer layer, aloe sits behind them, and two preservatives finish the list. It feels like water and disappears in seconds.
Timeless Matrixyl Synthe'6 Serum is one peptide in eight ingredients, cleaner than a seven-peptide blend. The labels disagree — Timeless lists the peptide second, a photographed label puts it last, after both preservatives. Both cannot be true at 2%. Treat the dose as unverified. A retinoid does more for wrinkles.
— Dr. Schwarz
Skin fit
Is it right for your skin?
Sensitive Skin
Eight ingredients, fragrance-free, no acid, no retinoid, no essential oil. Very little here to react to, which is the honest reason to pick it. It also means very little in it is doing anything else.
Sun Damage
Peptides are short chains of amino acids, the units proteins are built from. The theory is that a collagen fragment reads to the cells below as a signal that collagen has been damaged and more is needed. This is a cheap, clean way to test that theory. Retinoids have decades of large independent evidence for lines and sun damage. Peptides do not.
Normal Skin
This suits someone who wants one peptide at one stated price rather than a blend of nine with no numbers attached. The problem is that Timeless's own website and a photographed physical label do not agree on where the peptide sits in the ingredient order.
Texture
What it feels like on skin.
Serum
A watery serum that spreads thin and is gone in seconds. No slip, no film, no finish. Fragrance-free, and it does not sting. With eight ingredients and no acid, that is expected rather than impressive. It layers under anything without pilling, one of the few practical advantages of a formula this bare.
Alternatives
If this isn’t the right product for you
The Ordinary Buffet
About $17, fragrance-free, with this peptide among seven, all placed high, over a much better hydrating base.
Medik8 Liquid Peptides
The same peptide among ten, all high in the ingredient list, which is the best dosing signal here. It costs $62 to $72.
Derma E Advanced Peptides & Collagen Serum
Also built on Matrixyl Synthe'6, placed high, but it costs more, contains fragrance, and the collagen in its name is acacia gum.
Ingredients · Interactive
What’s in it, and where each ingredient works.
Full ingredient list · 8 ingredients, in label order. Click one.
The base the other ingredients are dissolved in. Most of it evaporates soon after the product goes on.
A small humectant. It moves into the outer layer of skin and holds water there.
How to use it
How to use it.
How to apply it
- How muchThree or four drops, patted over clean skin.
What to pair it with
- LayeringIt goes on early, before heavier serums and moisturizer — it is the thinnest thing in the routine. No clash with retinoids, acids or niacinamide.
What to expect
- What to expectVery little, and slowly. The supporting study ran 14 days on 25 people. Give it three months and photograph the start; slow changes are impossible to see in a mirror.
Questions
Common questions.
Is Timeless Skin Care Matrixyl Synthe'6 Serum a strong anti-aging treatment?
No. One gentle peptide. Retinoids are far better evidenced for wrinkles.
Can I use Timeless Skin Care Matrixyl Synthe'6 Serum with other serums?
Yes. It is simple and layers with most things.
Is the 2% peptide claim for Timeless Skin Care Matrixyl Synthe'6 Serum confirmed?
No. Where it appears on the ingredient list is disputed.
Is Timeless Skin Care Matrixyl Synthe'6 Serum fragrance-free?
Yes.
How long does Timeless Skin Care Matrixyl Synthe'6 Serum take to work?
Gradual and subtle, if at all. Give it several weeks.
References
Sources.
- 1. Oral and topical peptides for skin aging: systematic review and meta-analysis of randomized controlled trials (https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2026.1618306/full) — The exact 2026 Frontiers in Medicine systematic review the page cites: pooling 19 RCTs (1,341 participants), it found topical/oral peptides give only a modest pooled wrinkle-reduction effect but are well tolerated, backing the page's 'peptides are oversold' and 'better-studied but a low bar' framing. Link
- 2. Peptides in Facial Plastic Surgery: Emerging Applications in Aesthetics and Rejuvenation (https://doi.org/10.1055/a-2833-9992) — Explains that cosmetic peptides are modeled on matrikines to influence the extracellular matrix, but that most supporting evidence comes from in vitro/ex vivo work rather than RCTs and products have limited regulatory oversight, supporting the page's claim that peptides are an oversold category that discloses little. Link
- 3. Synergistic Effects of Injectable Platelet-Rich Fibrin and Bioactive Peptides on Dermal Fibroblast Viability and Extracellular Matrix Gene Expression: An In Vitro Study (https://www.mdpi.com/1420-3049/30/16/3415) — In vitro evidence that Matrixyl (palmitoyl-type peptide) stimulates human dermal fibroblasts and upregulates ECM/collagen genes (COL1A1, FN1, HAS1), backing the proposed collagen/ECM mechanism for the peptide category. Link
- 4. Matrixyl Synthe'6 Serum - Timeless Skin Care (https://www.timelessha.com/collections/anti-wrinkle-serums/products/matrixyl-synthe6-serum-1-oz) — Manufacturer page confirming the ~$29 price ($28.95), the stated 2% Matrixyl Synthe'6 (palmitoyl tripeptide-38) concentration, and the bare formulation (water, Matrixyl Synthe'6, aloe, glycerin, hyaluronic acid, plus two preservatives: benzyl alcohol and dehydroacetic acid). Link