PepRank

Matrixyl (palmitoyl pentapeptide-4)

45%positive21 reports

Also: Pal-KTTKS · palmitoyl pentapeptide-4 (formerly palmitoyl pentapeptide-3) · Matrixyl 3000 (palmitoyl tripeptide-1 + palmitoyl tetrapeptide-7) · Matrixyl synthe'6 (palmitoyl tripeptide-38) · The Ordinary Matrixyl 10% + HA / 'Buffet' multi-peptide serum

CleanSupplementTopical

The classic 'collagen-signal' cosmetic peptide; slow, soft smoothing, more hydration than lift.

KTTKS · palmitoyl- (palmitoyl pentapeptide-4) (5 residues)

KTTKS palmitoyl- (palmitoyl pentapeptide-4)

#17 of 23 supplements · updated
Access
Supplement
Cost / month
≈ €4–13
researchers' estimate; no listing to price
TopicalFelt in 8–12 weeks

Builds over days or weeks of regular use rather than with each dose.

21 user reports
Positive 9Mixed 2Nothing 5Negative 5
  • r/30PlusSkinCare· · 13 upvotesOriginal ↗

    i use TO’s buffet (peptides + ha now i think). It’s one of those products that I didn’t think i saw a change and then i stopped it. THEN i noticed what it was doing for me. it’s been wonderful for me.

    PositiveThe Ordinary Buffet (multi-peptide incl. Matrixyl 3000) · Topical · general anti-aging

    Buffet user who stopped for about a year and saw the difference

  • r/30PlusSkinCare· · 4 upvotesOriginal ↗

    I love both. Religious user. I'm 34 and they have made a noticeable difference in my skin texture.

    PositiveThe Ordinary Matrixyl 10% + HA with Argireline · Topical · texture

    34, uses Matrixyl and Argireline together

  • r/30PlusSkinCare· · 7 upvotesOriginal ↗

    I've started using this serum (only new product) and my skin is so dry, flaky and hurts to the touch in some places it is so dry.

    NegativeThe Ordinary Matrixyl 10% + HA · Topical · anti-aging

    naturally dry skin; Matrixyl was the only new product

Users report
Long-term users describe a quiet benefit: smoother texture, plumper and better-hydrated skin, forehead lines that soften over months, and several 'I only noticed when I stopped' reports (often with The Ordinary's Buffet, which bundles Matrixyl 3000 and other peptides). Nobody reports dramatic change, and most credit a stack with tretinoin, vitamin C or copper peptides, so the peptide's own share is unclear. About a quarter see nothing after several bottles. A distinct minority, about a quarter of reports, find The Ordinary's glycerin-heavy serum drying or sticky, with lines and pores looking worse within days and back to normal a week after stopping. Some say Matrixyl synthe'6 worked where Matrixyl 3000 did not. Felt nothing: ~25% of reports (5/21); another ~25% said lines looked worse while using it.
Best effects
Smoother texture, 'plumper' skin · hydration (the HA/glycerin base does much of this) · gradual softening of fine forehead and eye lines over months · 'noticed only when I stopped' slowing of change
Downsides
Drying, tight or flaky skin in some, making lines look worse until stopped · sticky texture / pilling under other products (The Ordinary version) · slow; nothing visible before 8-12 weeks · weakened by strong acids applied at the same time
Evidence
Human RCTs — one independent-looking but industry-run (P&G) 12-week split-face RCT for pal-KTTKS (n=93) plus manufacturer data for Matrixyl 3000/synthe'6; mechanism from fibroblast work; penetration of a lipidated pentapeptide through intact skin is limited
Caveat
Cosmetic-review bodies (CIR 2024) call palmitoyl pentapeptide-4 safe as used, and decades of mass-market use show no harm signal. The question is efficacy: the best trial is industry-run and small, and 'Matrixyl 10%' on a label is 10% of a dilute raw-material solution (ppm of actual peptide), not 10% peptide. The drying reports seem to come from the glycerin-heavy vehicle on dry skin, not the peptide itself.
Typical use
Apply 2-3 drops of a Matrixyl serum to face once or twice daily, after water-based serums and before moisturiser; avoid applying with direct acids or strong vitamin C at the same time.
Getting it
Over-the-counter cosmetic: The Ordinary Matrixyl 10% + HA and 'Buffet', Timeless Matrixyl 3000 / synthe'6, Minimalist, Geek & Gorgeous and many peptide serums. No grey-market vials needed.
Stacked with
Argireline: The most common pairing on Reddit (The Ordinary sells both); argireline for expression lines, Matrixyl all over the face. · tretinoin or retinal: Usual base of an anti-aging routine; most of the visible change is usually credited to the retinoid. · GHK-Cu (topical): Often layered or bought pre-mixed (Buffet + Copper Peptides).

User reports 21

  • r/30PlusSkinCare· · 13 upvotesOriginal ↗

    i use TO’s buffet (peptides + ha now i think). It’s one of those products that I didn’t think i saw a change and then i stopped it. THEN i noticed what it was doing for me. it’s been wonderful for me.

    PositiveThe Ordinary Buffet (multi-peptide incl. Matrixyl 3000) · Topical · general anti-aging

    Buffet user who stopped for about a year and saw the difference

  • r/30PlusSkinCare· · 4 upvotesOriginal ↗

    I love both. Religious user. I'm 34 and they have made a noticeable difference in my skin texture.

    PositiveThe Ordinary Matrixyl 10% + HA with Argireline · Topical · texture

    34, uses Matrixyl and Argireline together

  • r/30PlusSkinCare· · 3 upvotesOriginal ↗

    I prefer the texture and the results from the Synth’6. Not greasy after absorption, works well under makeup—on my second bottle and will continue with it. I have noticed improvement of fine lines, but like with everything, I’m sure it’s due to my combination of products

    PositiveTimeless Matrixyl synthe'6 · Topical · fine lines

    35F, combination skin, on second bottle; credits the whole routine

  • r/30PlusSkinCare· · 3 upvotesOriginal ↗

    I have used The Ordinary matrixyl+HA for years and feel like I get good results in relation to improved texture

    PositiveThe Ordinary Matrixyl 10% + HA · Topical · texture

    multi-year user

  • r/30PlusSkinCare· · 2 upvotesOriginal ↗

    I'm about 3 years into using the Timeless Beauty CoQ10 Matrixyl 3000 serum... at 34 I look about the same as I did in my mid to late 20's. My forehead lines are pretty much gone, my smile lines are still there, but they haven't gotten any deeper

    PositiveTimeless CoQ10 Matrixyl 3000 serum · Topical · forehead and smile lines

    34F, ~3 years of Timeless CoQ10 Matrixyl 3000, inconsistent during pregnancy

  • r/40PlusSkinCare· · 2 upvotesOriginal ↗

    I use the ordinary matrixyl after my toner during the day and I actually love how good it is at locking in hydration, which I also think makes my skin look better.

    PositiveThe Ordinary Matrixyl, mornings after toner · Topical · hydration and fine lines

    40+ user; credits the hydration, eye-line gains came from a separate peptide eye serum

  • r/40PlusSkinCare· · 2 upvotesOriginal ↗

    My skin just looks... better when I use it consistently. Can't put my finger on what exactly it's doing, but I do think it's helping with hydration and overall smoothness.

    PositiveMinimalist Multi-Peptides 10% (Matrixyl) · Topical · general anti-aging

    40+ user, consistent use

  • r/30PlusSkinCare· · 1 upvotesOriginal ↗

    I tried a serum with matrixyl in the past and really liked it... My skin felt smoother and more "plump" and it didn't seem to irritate my sensitive skin which is always a win!

    PositiveTopical · fine lines

    sensitive-skin user who tried a Matrixyl serum, later moved to other peptide products

  • r/30PlusSkinCare· · 1 upvotesOriginal ↗

    I’ve been using Matrixyl and Synth 6 and I can tell you now the difference is night and day definitely feel the skin density and plumpness increased over the past few months of twice daily use team this up with GHKCU injections and Tret

    PositiveMatrixyl + synthe'6 twice daily · Topical · general anti-aging

    under 30; stacked with GHK-Cu injections and tretinoin, so heavily confounded

  • r/30PlusSkinCare· · 25 upvotesOriginal ↗

    I have noticed changes with Matrixyl Synthe 6. Matrixyl 3000 alone has done absolutely nothing for me.

    MixedTimeless Matrixyl 3000, then synthe'6, then The Ordinary Matrixyl 10% · Topical · forehead fine lines

    post-pregnancy forehead lines; Matrixyl 3000 did nothing, synthe'6 helped slightly

  • r/30PlusSkinCare· · 8 upvotesOriginal ↗

    I’ve been using it consistently for about 6 months. It has a small effect, but it’s not that impressive. I get better results with Botox.

    MixedTopical · lines

    6 months consistent use, compares unfavourably with Botox

  • r/30PlusSkinCare· · 5 upvotesOriginal ↗

    The ordinary one does not really work for me, and the texture is very sticky so is a no.

    NothingThe Ordinary Matrixyl 10% + HA · Topical · anti-aging

    compared it with Cosrx and Numbuzin peptide serums

  • r/30PlusSkinCare· · 2 upvotesOriginal ↗

    I’ve seen most results from Altreno (Tretinoin) and the 20% Vitamin C serum. I really can’t say if the CoQ10 or MS6 has worked.

    NothingTimeless CoQ10 (Matrixyl 3000) AM, Matrixyl synthe'6 PM · Topical · anti-aging

    also on tretinoin, azelaic acid and vitamin C, which she credits instead

  • r/30PlusSkinCare· · 2 upvotesOriginal ↗

    I have used a few bottles of TO Matridyl and using one now, but honestly I can never tell any difference from it. It’s cheap and makes me feel like I am making an effort for my skin, but that‘s about it.

    NothingThe Ordinary Matrixyl 10% + HA · Topical · anti-aging

    several bottles, still using

  • r/30PlusSkinCare· · 1 upvotesOriginal ↗

    I've been using Ordinary Matrixyl+ HA for about a month now and honestly can't say anything about it either way.

    NothingThe Ordinary Matrixyl 10% + HA · Topical · general anti-aging

    37, long-time skincare user, one month in as a swap for plain HA serum

  • r/30PlusSkinCare· · 1 upvotesOriginal ↗

    I was using the matrixyl Synthe 6 at night but I really did not see any difference.

    NothingTimeless Matrixyl synthe'6 at night · Topical · anti-aging

    used on damp skin after a mist

  • r/30PlusSkinCare· · 7 upvotesOriginal ↗

    I've started using this serum (only new product) and my skin is so dry, flaky and hurts to the touch in some places it is so dry.

    NegativeThe Ordinary Matrixyl 10% + HA · Topical · anti-aging

    naturally dry skin; Matrixyl was the only new product

  • r/30PlusSkinCare· · 5 upvotesOriginal ↗

    I stopped using Matrixyl due to my skin looking worse with it. I love Argireline but the Matrixyl is not doing it for me. I think it’s just super drying and can dehydrate our skin making wrinkles look worse.

    NegativeTopical · wrinkles

    happy Argireline user; skin back to normal a week after stopping Matrixyl

  • r/30PlusSkinCare· · 4 upvotesOriginal ↗

    Ordinary's Matrixyl is not for use on very dry & sensitive/irritated skin. I've experienced this first-hand myself, even if in general it is quite gentle.

    NegativeThe Ordinary Matrixyl 10% + HA · Topical · anti-aging

    reports the same drying first-hand

  • r/30PlusSkinCare· · 4 upvotesOriginal ↗

    after a few weeks of using it I’m convinced it’s actually doing the opposite of what I want... I’ve noticed my skin has more texture - pores are more noticeable on my forehead and around my mouth. The fine lines are more prominent like my skin has been dried out.

    NegativeTopical · fine lines

    a few weeks of The Ordinary Matrixyl

  • r/30PlusSkinCare· · 2 upvotesOriginal ↗

    I started using it and within days I noticed the lines around my mouth looking waaaayyyy deeper and more set in. There was no other change in my routine, and I thought I was losing it with how quickly it happened.

    NegativeThe Ordinary Matrixyl, added to Argireline · Topical · fine lines

    fair-skinned redhead; no other routine change; improving after stopping

Safety

Tier by safety barStrict CleanBalanced CleanEvidence only Clean

Seen harmMechanismData gapSilent harmProduct

Seen harm 0/3
Mass-market use since the early 2000s without a serious signal; patch tests in 157 people showed no sensitisation, and first-hand complaints are dryness and lines looking worse. CIR Expert Panel 2024: palmitoyl pentapeptide-4 safe as used in cosmetics ↗
Mechanism 0/3
A lipidated collagen fragment that signals fibroblasts in vitro and barely penetrates skin; no pathway to serious harm is known.
Data gap 0/3
The CIR Expert Panel concluded in 2024 that it is safe as used, backed by decades of mass cosmetic use and a 93-person RCT. CIR Expert Panel 2024: palmitoyl pentapeptide-4 safe as used in cosmetics ↗Robinson et al. 2005: topical pal-KTTKS split-face RCT, n=93 (PubMed 18492182) ↗
Silent harm 0/3
Dryness or irritation shows within days and clears on stopping.
Product 0/3
OTC cosmetic serums from mainstream brands.

Where to buy 1 in Europe · 4 total

ShopFormPricePer mgTesting
CertaPeptidesEU · ROpowder · 10 mg€20€2.00/mgThird-party tested
The Ordinary (Deciem)Other · CAserum€13—No public tests
iHerbUSserum€40—No public tests
iHerbUSserum€41—No public tests

Studies 3

Sources 3

More in Skin & hair all 17 →

  1. 1EGF serum (sh-oligopeptide-1) CautionSupplement Topical≈ €13–81 / month59%positive24 reportsRecombinant human growth factor in serums; users like the glow, but keep it off broken or microneedled skin.
  2. 2GHK-Cu (topical) GHK (3 residues) CautionSupplement ≈ €9–36 / month59%positive44 reportsDecades-old cosmetic copper peptide; gentle skin firmness/texture and possibly hair benefits.
  3. 3SYN-AKE (dipeptide diaminobutyroyl benzylamide diacetate) CautionSupplement Topical≈ €4–27 / month57%positive18 reportsSynthetic 'snake venom' peptide for expression lines; mostly a K-beauty sheet-mask ingredient, mild at best.
  4. 4AHK-Cu (topical) AHK (3 residues) CautionSupplement ≈ €13–90 / month46%positive20 reportsGHK-Cu's hair-targeted sibling; scalp serum users report baby hairs, but data stop at a dish.
  5. 5Leuphasyl (pentapeptide-18) CautionSupplement Topical≈ €4–27 / month55%positive1 reportsEnkephalin-mimic expression-line peptide, sold as argireline's partner; hard to find alone, barely reviewed.
  6. 6Argireline (acetyl hexapeptide-8) EEMQRR (6 residues) CautionSupplement Topical≈ €4–13 / month48%positive25 reportsSNAP-25-mimic 'topical Botox' for expression lines; real but mild softening for about half of users.
  7. 7Collagen peptides (oral) CleanSupplement ≈ €11–16 / month49%positive47 reportsFood-grade protein; modest, slow, inconsistent benefits for skin, nails and joints.
  8. 8SNAP-8 (acetyl octapeptide-3) EEMQRRAD (8 residues) Caution Topical≈ €9–22 / month45%positive12 reportsArgireline's longer sibling, mostly DIY-mixed from peptide vials; users rarely see more than argireline.
  9. 9Tricomin CautionSupplement Topical≈ €27–63 / month43%positive1 reports1990s ProCyte copper-peptide hair spray, now an AHK-Cu cosmetic; one unpublished small trial, users shrug.
  10. 10Biotinoyl tripeptide-1 (Procapil) & Capixyl hair serums GHK (3 residues) CautionSupplement Topical≈ €10–20 / month42%positive25 reportsCosmetic anti-shedding peptides in cheap leave-on scalp serums; a minority see baby hairs.
  11. 11Nonapeptide-1 (Melanostatine 5) CautionSupplement Topical≈ €4–13 / month45%positive12 reportsAlpha-MSH blocker for dark spots, always sold beside stronger lighteners; its own effect is untested.
  12. 12Hexapeptide-9 (Collaxyl) CautionSupplement Topical≈ €4–27 / month3/10estimateCollagen-sequence 'signal' peptide in firming serums; tested in people only as a modified or enhanced version.
  13. 13Tripeptide-10 citrulline (Decorinyl) CautionSupplement Topical≈ €4–27 / month3/10estimateDecorin-mimic peptide meant to tidy collagen fibres; one tiny randomised trial, no user reports.
  14. 14Melanotan II DHFRWK (6 residues) Excluded Nasal / Injection≈ €27–54 / month51%positive51 reportsNon-selective melanocortin agonist for tanning; works, but has documented serious harms.Documented serious harms (melanoma reports, PRES, priapism) from non-selective melanocortin activation.
  15. 15GHK-Cu (injectable) GHK (3 residues) Excluded Injection≈ €20–40 / month50%positive30 reportsHugely popular for skin tightening and hair; supraphysiologic systemic dosing with no human data.Borderline: theoretical growth-factor/angiogenic signalling at supraphysiological systemic doses with no human injectable safety data. Topical GHK-Cu gives much of the skin benefit without this.
  16. 16PTD-DBM Excluded Topical≈ €36–90 / month42%positive6 reportsWnt-activating hair-regrowth peptide from mouse studies; DIY users report little.It works by switching on Wnt/beta-catenin signalling in skin, and sustained beta-catenin activation causes hair-follicle tumours in mice and pilomatricoma in humans. It has no human safety data, and users pair it with valproic acid, a teratogen.

Sequence beads

Each bead is one amino acid in the peptide's chain, coloured by its side chain: grey for non-polar, cyan for polar, blue for positively charged and fuchsia for negatively charged. Length and mix tell related peptides apart at a glance, from a two-residue dipeptide like carnosine to a 43-residue protein like thymosin beta-4. The colours describe chemistry only and predict neither effect nor safety.

non-polarpolarpositivenegative

Report grades

Every first-hand Reddit or X report is graded on its own, from glowing through positive, mixed, nothing and negative to bad reaction, and the bar shows how those grades split. Posts that look vendor-adjacent stay on the peptide's page but are left out of the counts.

GlowingPositiveMixedNothingNegativeBad reaction

% positive

The share of a peptide's graded Reddit and X reports that are glowing or positive, vendor-adjacent posts left out. A peptide with few reports is pulled toward the average of all reports, as if it had eight average ones besides its own, so two glowing posts cannot top the list. Kept peptides rank by the same reports' mean grade, shrunk the same way, and excluded ones follow in that order.

Researcher estimate

No first-hand report of this peptide has been graded yet, so the figure is the researchers' own rating out of 10 from what they read about it. It ranks alongside the computed scores until reports arrive.

Safety tier

Each peptide is tiered clean, caution or excluded from its five risk axes under the chosen safety bar. An excluded peptide has a plausible route to serious harm, so it stays listed with the reason but ranks behind every other entry, however good its reviews.

Safety bar

The safety bar sets how much risk it takes to exclude a peptide. Strict: out on any serious mechanism with little human data, or any documented serious harm. Balanced: out on documented serious harm (unless it is obvious, reversible and from a regulated product), or a serious mechanism whose harm would be silent with no human data at all. Evidence only: out only on documented serious harm in humans that is lasting, delayed or from grey-market product.

Seen harm

Documented serious adverse events in humans, from 0 for none despite real exposure to 3 for deaths or several well-documented serious harms. Serious means a hospital or emergency visit or harm lasting weeks, so a headache or a bad night does not count.

Mechanism

A plausible biological route to serious harm at the doses people use, such as growth-factor signalling, hormone-axis suppression, heart or blood-pressure effects or immune activation. It runs from 0 when none is known to 3 when a dangerous pathway has been shown in living animals.

Data gap

How little human safety data exists for the molecule actually sold, from 0 for an approved drug with large trials and years of use to 3 for no human safety data at all. A modified analogue does not inherit its parent's trials.

Silent harm

Whether the feared harm would show quickly or stay hidden, from 0 when it is obvious and goes on stopping to 3 when it is silent and delayed, like tumour promotion or slow organ damage. User reports cannot reveal a harm that takes years to appear, so a high score here limits what good reviews can tell you.

Product

The risk of what people actually buy, from 0 for a regulated pharmacy or supplement product taken by mouth or on the skin to 3 for a grey-market injectable. In one dataset of 6,441 grey-market samples, 42–71% failed basic quality criteria and 15% carried endotoxin.

Evidence

The strongest kind of study behind the peptide's effects, from an approved drug through human controlled trials and small human studies to animal work or nothing of its own. Animal results often fail to carry over to people.

Access

How people get it: as an approved drug, a compounded prescription, an over-the-counter supplement or from the grey market, where nobody checks the vial. The channel decides both the legal position and the risk of a bad batch.

Price per month

Thirty days of the typical dose, from its low end to its high end, priced at the listing a careful buyer would choose: in stock, from a shop scoring 4 of 5 on trust (third-party tested where no score is set), failing that 3, a pure pack before a blend, a European shop first, then the cheapest per mg. The range is the dose's, not the shops'. A per-dose amount counts once a day unless the dose says otherwise. Prices are in euros at ECB rates of 2026-10-29, before shipping; the shop table keeps each listing's price per mg, per gram for bulk supplements. Where no listing can be priced the researchers' own estimate stands in, and says so.

Dose users report

The middle half of the daily doses stated in at least five first-hand reports, vendor posts left out. Where its middle sits more than twice above or below the declared dose, the month is priced at it as well, since what people take is what they pay for.

Testing

Whether the shop publishes lab results: third-party tested means an independent lab checks each batch, own COA means the shop's own certificate of analysis, and no public tests means neither. A certificate shows purity, not safety.

Added peptide

Some packs sold under one peptide's name hold a second one, such as 5 mg GHK-Cu in a nasal kit, stated only in the description. Sprayed in the nose or injected it reaches the blood like an injection, so it carries the risk of that route and is tiered as the injectable form, whatever its tier on the skin. A pack whose page gives no contents list may hold more than its name.