Palmitoyl Tripeptide-38 (Matrixyl synthe'6)
Published · Researched 2026-09-21
Palmitoyl Tripeptide-38 (Matrixyl synthe'6)
Overview
- Type: Synthetic lipopeptide cosmetic active (matrikine signal peptide), not a drug
- Maker: Trade name MATRIXYL synthe'6, from Sederma (Croda) of France
- Purpose: Topical anti-wrinkle cosmetic active marketed as addressing six skin-matrix components at once: collagen I, III and IV, fibronectin, hyaluronic acid, and laminin-5 (the dermal–epidermal junction anchors). Positioned as the "deep" Matrixyl — wrinkles that originate at the junction rather than the surface.
- 2026 context: The quietest Matrixyl socially, but with the strongest brand-site review footprint: Timeless Matrixyl Synthe'6 Serum holds 4.9★ across 1,962 reviews (timelessha.com, crawled 2026-09-17), priced at $28.95. It is also half of The Ordinary Matrixyl 10% + HA's formula (the other half being Matrixyl 3000). Esthetician educators on Instagram are its main evangelists; no viral TikTok/Threads moment located in this research.
Social standing
- Platform pulse:
- Instagram (educator endorsement): Wendy Mckay (@wessie7582, 1.4K followers, self-described esthetician of 30+ years, reel Apr 16, 2026) delivers a science-backed endorsement of the Skin Dive Matrixyl Synthe 6 serum: the peptide "targets six distinct causes of aging simultaneously," with a "matrikine-like" effect on collagen I/III/IV, fibronectin, hyaluronic acid, and laminin 5, "especially relevant" for skin in the 40s–50s and perimenopause. The post funnels to her TikTok shop — educational tone, commercial endpoint.
- Instagram (brand/educator): Rhonda Allison (@rhondaallison, 17K followers, Jun 18, 2026) promotes her Pro Youth 10 Peptide 38 Elite Collagen Cocktail with Matrixyl Synthe 6 as the hero, citing study results of 21% reduction in wrinkle volume, 19% in depth (brand-claimed figures, not independently verified).
- Facebook (skeptical-educational): Cynthia Garcia (verified, 58K followers, Aug 12, 2026) covers both Matrixyl 3000 and Synthe'6 as "upgraded versions of Matrixyl that target deeper lines," calling them "a keeper with an asterisk" — the asterisk being that headline stats come from the raw-ingredient manufacturer.
- Retailer reviews: 1,962 brand-hosted reviews at 4.9★ (Timeless) — strong social proof, but brand-hosted and unverified as independent sentiment.
- Group consensus: Facebook Group keyword queries returned no Matrixyl discussion (see matrixyl). No viral moments found; no complaint threads surfaced.
- Praise/complaints: No direct consumer quotes about Synthe'6 alone were located — it is almost always discussed bundled with Matrixyl 3000 (e.g. the Cult Beauty reviews quote under matrixyl praising "matrixyl 3000 and matrixyl synthe 6" together for good concentration and non-irritating feel). The absence of standalone complaints is a data gap, not a clean bill.
Social validation
- Tier 2. Named sources:
- Instagram esthetician educators (@wessie7582, @rhondaallison, 2026) — prove professional-channel endorsement and the "six-matrix-components" narrative, though both posts are commercial funnels (TikTok shop / brand line).
- Cynthia Garcia FB reel (Aug 2026) — proves the skeptical mainstream audience accepts it as legitimate but stats-suspicious.
- Timeless brand-site reviews (1,962 @ 4.9★) — prove volume of satisfied buyers; not independent verification.
- What each proves: the ingredient has real professional and buyer backing, but every hard efficacy number is manufacturer-supplied (UNVERIFIED independently), and standalone (non-bundled) user testimony is scarce.
Key specs
| Fact | Value | Status |
|---|---|---|
| INCI name | Palmitoyl Tripeptide-38 | Verified (The Ordinary ingredient list via Cult Beauty; Rhonda Allison infographic) |
| Trade name | MATRIXYL synthe'6 — Sederma (Croda) | Verified |
| Amino acid sequence | Not confirmed in fetched sources | UNVERIFIED (no primary Sederma TDS fetched in this research) |
| Molecular weight / formula | Not confirmed in fetched sources | UNVERIFIED |
| Mechanism | Matrikine-like signaling; claimed to stimulate collagen I, III, IV, fibronectin, hyaluronic acid, laminin-5 | Brand/educator-described (Rhonda Allison, Wendy Mckay); UNVERIFIED independently |
| Claimed efficacy | 21% wrinkle-volume reduction, 19% depth reduction (brand-claimed study) | Manufacturer-reported; UNVERIFIED independently |
| Form | Cosmetic raw active; finished serums (dropper bottles) and "serum boosters" | Verified |
| Label note | Third-party product "Skin Perfection Matrixyl Synthe'6 Serum Booster" labels its active as "Palmitoyl Tetrapeptide-38" (photo verified) — an apparent label typo; per INCI conventions the Sederma active is Tripeptide-38 | Verified from the real product photo; correction is my assessment, UNVERIFIED as the brand's intent |
Pricing
- Timeless Matrixyl Synthe'6 Serum, 1 oz (30 ml) — MSRP $28.95 (timelessha.com, crawled 2026-09-17; 4.9★, 1,962 reviews); refill pouch $20.95
- The Ordinary Matrixyl 10% + HA, 30 ml (Matrixyl 3000 + Synthe'6 combo): $10.90 – $14.40 (Nordstrom/ASOS/Sephora, 2026-09-20)
- Skin Perfection Matrixyl Synthe'6 Serum Booster (0.5 fl oz / 15 ml): price not fetched — UNVERIFIED
- Facebook Marketplace used listings: none found (2026-09-20). No used-market data.
What's included / what's needed
- Ready-to-use dropper serum; Timeless base is water/aloe/glycerin/hyaluronic acid. Use 2–3 drops AM/PM.
- Usually sold and discussed bundled with Matrixyl 3000 (The Ordinary's 10% formula); standalone Synthe'6 serums (Timeless, Skin Perfection) exist but get less standalone discussion.
- No prescription, no mixing, no device.
Support reality
- Support sits with finished-product brands (Timeless, Skin Perfection, DECIEM).
- No community complaints about any of these brands' support surfaced; support quality is UNVERIFIED (no user reports found either way).
Community verdict
Matrixyl synthe'6 is the Matrixyl everyone buys but nobody debates: estheticians champion its six-component matrix story, Timeless buyers rate it 4.9 stars in the thousands, and it's quietly half of the best-selling budget peptide serum — yet almost no one discusses it on its own, and its headline numbers (21% volume, 19% depth) are brand-quoted manufacturer data that the community's skeptics keep politely asterisked.
Regulatory & safety status
- Cosmetic ingredient, NOT a drug. Not FDA-approved or EMA-approved as a drug; no prescription, compounded, or research-chemical form in this context. Topical OTC cosmetic use only.
- Reported as well-tolerated; no safety controversies surfaced in this research.
- Not part of any injectable peptide/biohacking protocol — topical cosmetic only.
Images
Real product photos saved to img/ (all JPEG, verified image files, visually checked as real product photography; ZERO synthetic images):
img/palmitoyl-tripeptide-38-hero.jpg— hero: Timeless Matrixyl Synthe'6 Serum bottle (timelessha.com official product shot)img/palmitoyl-tripeptide-38-side.jpg— alternate-angle: Timeless Synthe'6 Serum 4 oz / 120 ml bottleimg/palmitoyl-tripeptide-38-box.jpg— third-party product: Skin Perfection Matrixyl Synthe'6 Serum Booster (0.5 fl oz) — real bottle photo; note label says "Tetrapeptide-38" (apparent typo, see specs)- Missing views: outer box, top-down angle, genuine in-use application shot, scale reference, rear panel
Not medical advice. This is a research summary of publicly available community and retailer information about a cosmetic ingredient, compiled 2026-09-20. It is not a recommendation to buy or use any product; consult a dermatologist for skin concerns.
Named sources
- Instagram @wessie7582 — - **Instagram (educator endorsement):** Wendy Mckay (@wessie7582, 1.4K followers, self-described esthetician of 30+ years, reel Apr 16, 2026) delivers a science-backed endorsement of the Skin Dive Matrixyl Synthe 6 serum: the peptide "targets six distinct… (Apr 16, 2026)
- Instagram @rhondaallison — - **Instagram (brand/educator):** Rhonda Allison (@rhondaallison, 17K followers, Jun 18, 2026) promotes her Pro Youth 10 Peptide 38 Elite Collagen Cocktail with Matrixyl Synthe 6 as the hero, citing study results of **21% reduction in wrinkle volume, 19% in… (Jun 18, 2026)
- Retailer review — - **Retailer reviews:** 1,962 brand-hosted reviews at 4.9★ (Timeless) — strong social proof, but brand-hosted and unverified as independent sentiment.
- Cult Beauty review — the Cult Beauty reviews quote under matrixyl.md praising "matrixyl 3000 and matrixyl synthe 6" together for good concentration and non-irritating feel).
- Cult — | INCI name | Palmitoyl Tripeptide-38 | Verified (The Ordinary ingredient list via Cult Beauty; Rhonda Allison infographic) |
Source URLs were not recorded for these references.