Naturium Multi Peptide Serum Review: Ingredients and Evidence

Start with our pillar guide: Argireline vs Matrixyl: Mechanisms, Trials and Which to Use, or browse all Reviews & Comparisons articles.

Our Naturium multi peptide serum review covers a $25, 30 ml cream-serum. It contains Argireline (acetyl hexapeptide-8), 2 copper or palmitoyl peptides with no published research, and hydrolyzed collagen, all in an encapsulation base. Naturium doesn't disclose any concentrations and hasn't published a study of the product itself. Evidence: Limited for Argireline. We found no evidence at all for the other 2 peptides.

We haven't tested this serum; this is an ingredient-and-evidence breakdown. This article has no affiliate links and isn't sponsored. We judged the serum on 3 things: what the label discloses, what peer-reviewed human evidence exists for each active, and what is still unknown. The price, size and ingredients come from the official Naturium product page, checked October 10, 2026. Check the current label before you buy, because the brand says packaging can differ from the online list.

For background on how the different peptide classes are supposed to work, see our guide to peptide ingredients in skincare.

Key takeaways

• Naturium lists 3 synthetic peptides plus hydrolyzed collagen. It discloses no percentages for any of them.
• 2 of the named peptides, copper palmitoyl heptapeptide-14 and palmitoyl sh-hexapeptide-13 serine SP amide, returned zero hits in PubMed and Europe PMC.
• Argireline has 1 placebo-controlled human trial with 60 participants, so its evidence is Limited. The only peer-reviewed paper on "Argireline Amplified" is a lab muscle model co-written by the company that makes the ingredient.
• The "Lactic Acid/Glycolic Acid Copolymer" on the label is an encapsulation polymer, not an exfoliating acid.
• Naturium's 6–12 week results timeline and "dermatologist tested" claim are not backed by any published study.

What is in the Naturium Multi-Peptide Advanced Serum?

It's a water-based emulsion with oils, squalane and shea butter, 3 synthetic peptides, hydrolyzed collagen and ferulic acid. The brand lists the pH as 4.79–5.85 and describes the serum as fragrance-free and vegan.

Full INCI, in the order the brand lists it. INCI is the standardized ingredient naming system used on cosmetic labels.

Aqua/Water/Eau, Propanediol, Caprylic/Capric Triglyceride, Isopentyldiol, Ethylhexyl Polyhydroxystearate, Squalane, Tetradecane, Glyceryl Stearate Citrate, Butyrospermum Parkii (Shea) Butter, Polyglyceryl-3 Stearate, Helianthus Annuus (Sunflower) Extract, Oryza Sativa (Rice) Bran Extract, Mannitol, Phosphatidylcholine, Ferulic Acid, Arginine, Acetyl Hexapeptide-8, Copper Palmitoyl Heptapeptide-14, Palmitoyl sh-Hexapeptide-13 Serine SP Amide, Hydrolyzed Collagen, Rosmarinus Officinalis (Rosemary) Leaf Extract, Lactic Acid/Glycolic Acid Copolymer, Glycerin, Tocopherol, Pullulan, Lysolecithin, Sclerotium Gum, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Dimethicone, Sodium Phytate, Diglycerin, Hydrogenated Lecithin, Silica, Cetyl Alcohol, Hydroxyacetophenone, Polysorbate 60, Sorbitan Isostearate, Sodium Hydroxide, Sodium Benzoate, Potassium Sorbate, Polyvinyl Alcohol, Decyl Glucoside, Xanthan Gum, Tocopheryl Acetate, Sodium Chloride, Citric Acid, Phenoxyethanol.

Some of these names need translating:

Naturium says the serum contains encapsulated copper peptides, ferulic acid and collagen. It doesn't say which carrier holds which ingredient.

Does the Naturium multi peptide serum disclose peptide concentrations?

No. The Naturium page lists no percentage for any peptide, and we haven't used figures from third-party sites.

The label order does give a rough clue. The 3 peptides come after ferulic acid and arginine, which suggests each one makes up a small fraction of a percent. But ingredients under 1% can legally be listed in any order, so the order can't tell you an actual amount. Good Molecules takes the opposite approach and publishes parts-per-million figures. We cover that in our Good Molecules Super Peptide Serum breakdown.

Naturium multi peptide serum review: what does the evidence say about each peptide?

Only 1 of the 3 synthetic peptides, Argireline, has published human data. Even that is a single 60-person trial plus smaller studies. The other 2 have no published research of any kind.

Argireline (acetyl hexapeptide-8)

Argireline was designed to interfere with the SNARE complex, the protein machinery nerves use to release the signal that makes muscles contract. In the developer's own lab tests, it showed potency similar to botulinum toxin A but "much lower efficacy." The same 2002 developer study reported that an emulsion described as 10% Argireline reduced wrinkle depth by up to 30% after 30 days in healthy women. The abstract doesn't give the sample size (Blanes-Mira et al., 2002). Evidence: Early / preliminary.

The strongest independent trial is a 2013 placebo-controlled RCT. It randomized 60 Chinese participants 3:1 to Argireline or placebo, applied around the eyes twice daily for 4 weeks. On a subjective "total anti-wrinkle efficacy" rating, 48.9% of the Argireline group responded vs 0% on placebo. That figure is a responder rating, not a 48.9% reduction in wrinkle depth. Concentration and funding aren't reported in the abstract (Wang et al., 2013). Evidence: Limited.

In a 2023 double-blind RCT, 21 Indonesian women aged 26–55 applied 1 of 3 creams to their crow's feet for 8 weeks. Palmitoyl pentapeptide-4 (Matrixyl) beat both Argireline and placebo. The authors called it an initial study that needs more participants (Aruan et al., 2023). Evidence: Early / preliminary. Our Argireline explainer covers these trials in more depth.

What "Amplified" means is not stated. "Argireline Amplified" is a trade name from the company that supplies the ingredient. The only peer-reviewed paper that names it used it as a proof-of-concept test in a 3D-printed, lab-grown human muscle model, where it was described as relaxing the muscle. That paper had no skin and no human participants, and its co-authors came from Lubrizol Life Science/Lipotec, the ingredient maker (Mestre et al., 2021). Evidence: Lab / animal only.

Copper palmitoyl heptapeptide-14

Searches for copper palmitoyl heptapeptide-14 in PubMed and Europe PMC returned no relevant records. Any efficacy data for it would come from supplier marketing, not peer-reviewed research.

You also can't borrow evidence from GHK-Cu, the well-known copper tripeptide, because this is a different molecule. Even GHK-Cu's topical record is thin. In a small RCT with 13 completers, a GHK-Cu regimen after CO2 laser resurfacing showed no difference vs a regimen without GHK-Cu over 12 weeks (Miller et al., 2006). Two recent reviews describe strong cell data but few controlled human trials (Mortazavi et al., 2025; Najafi et al., 2026). We go into more detail in our copper peptides guide.

Palmitoyl sh-hexapeptide-13 serine SP amide

PubMed and Europe PMC returned zero hits for palmitoyl sh-hexapeptide-13 serine SP amide. We found no published human, animal or lab study, and Naturium doesn't explain what role it plays in the formula.

Can the peptides in the Naturium serum reach the skin cells they target?

Probably not in any meaningful amount, at least going by the Argireline data. Naturium credits encapsulation, but it has published no penetration data for this formula.

US FDA researchers applied an emulsion described as 10% Argireline to human cadaver skin for 24 hours. Most of it washed off the surface. About 0.22% of the applied dose reached the stratum corneum (the outermost layer of skin), 0.01% reached the epidermis, and none was detected in the dermis (Kraeling et al., 2015). Evidence: Lab / animal only. Argireline's large size and water-loving structure make its permeation "poor" (Lim et al., 2018). A 2025 review concluded that its ability to reach the junctions between nerves and muscles "remains uncertain" (Zdrada-Nowak et al., 2025).

The vehicle does matter. In pig-ear skin, water-rich multiple emulsions delivered more Argireline than oil-rich ones (Hoppel et al., 2015). A 2022 review lists nanocarriers among the methods that might help peptides penetrate (Mortazavi & Moghimi, 2022). Whether Naturium's particular encapsulation helps is untested. Our article on whether peptides absorb into skin explains the barrier problem.

The trials used emulsions described as 10%. The abstracts don't say whether that means pure peptide or 10% of a supplier solution, so a direct dose comparison isn't possible. And because Naturium gives no concentration, nobody outside the company knows how this serum compares with the trial amounts.

Is the "glycolic acid" in the Naturium serum an exfoliant?

No. "Lactic Acid/Glycolic Acid Copolymer" is PLGA, a biodegradable polymer used to encapsulate ingredients. It is not free glycolic acid, so it shouldn't exfoliate the way an AHA toner does.

People often ask about this on peptide forums, because "glycolic" is right there in the INCI. The listed pH of 4.79–5.85 is mildly acidic but normal for a serum.

Can you use the Naturium multi-peptide serum with retinol or vitamin C?

Naturium says you can layer it with any Naturium product, including retinol, retinaldehyde and vitamin C, and credits encapsulation for that. No published data supports or refutes this claim for this formula.

There is a long-standing concern that copper peptides and L-ascorbic acid (pure vitamin C) or strong acids destabilize each other. We found no human study testing it, so it rests on formulation chemistry, not clinical evidence. A cautious default is to use them at different times of day. People commonly combine peptides with retinoids, and when irritation happens it usually comes from the retinoid.

What do users say about the Naturium multi peptide serum?

User reports cluster around "fine for the price, mild and slow." The most common complaint is a smell, even though the serum is labeled fragrance-free.

• Mild results over time. In an r/SkincareAddiction thread, replies ranged from gradual improvement to only mild results.
• Smell. Several users in the same thread describe an odd, savory or smoky scent. We don't know which ingredient causes it.
• Texture. Users in r/30PlusSkinCare describe it as thick, almost lotion-like, and hydrating for dry skin.
• Brand concerns. Some users in another thread say they've stopped buying from Naturium for brand reasons. Those reasons aren't explained in what we reviewed.

Why user reviews can't prove a serum works: many reviewers use several actives at once. One user who likes this serum also uses tretinoin and says they can't tell which product is doing the work (r/GracefulAgingSkincare). Changes in hydration, lighting and expression also muddy before-and-after impressions.

Naturium multi peptide serum review: who might it suit?

It may suit people with dry or normal skin who want a richer, fragrance-free moisturizing layer and accept that the peptide benefits are unproven. The emollient base (squalane, shea butter, triglycerides) and humectants (glycerin, propanediol, hydrolyzed collagen) can explain short-term hydration.

It's a weaker fit for:

• People who want dose transparency. No concentrations are disclosed.
• Anyone hoping for a result like neurotoxin injections. No topical peptide has shown that in humans.
• People sensitive to smells, given how often users mention the scent.
• Oily or acne-prone skin. The base is rich, though we found no data on pore-clogging for this formula.

How does the Naturium serum compare with Good Molecules Super Peptide Serum?

The 2 serums take opposite approaches to transparency. Neither has a product-level clinical study.

The Good Molecules figures are as listed on the brand's page on October 10, 2026, so check the current label.

Where the evidence stops

• Concentrations. Naturium discloses no peptide percentages, so the formula can't be compared with any trial.
• 2 of the 3 synthetic peptides. They have no peer-reviewed data of any kind.
• "Amplified" Argireline. The only paper is a supplier-co-authored lab muscle model with no skin.
• Encapsulation. We don't know which ingredients are encapsulated or whether that improves penetration in this formula.
• The finished product. There is no published trial of the serum. The 6–12 week timeline and "dermatologist tested" label aren't tied to any cited study.
• Layering claims. We found no data on stability or irritation when the serum is combined with retinoids or vitamin C.

FAQ

Does the Naturium Multi-Peptide Advanced Serum contain an exfoliating glycolic acid? No. The "Lactic Acid/Glycolic Acid Copolymer" on the label is PLGA, a biodegradable encapsulation polymer, not free glycolic acid. The serum's listed pH of 4.79–5.85 is normal for a serum.

Why does a fragrance-free peptide serum have a smell? "Fragrance-free" means no fragrance was added. It doesn't mean the product has no smell, because raw materials can carry their own odors. Users often describe this serum's scent as savory or smoky, but we don't know which ingredient causes it.

How long does the Naturium serum take to work? Naturium says 6–12 weeks, but that's the brand's claim, not trial data. The closest human evidence for Argireline lasted 4 weeks (Wang et al., 2013), and the other 2 peptides have no published timeline at all.

Is the Naturium Multi-Peptide Serum like Botox in a bottle? No. In lab tests, Argireline showed much lower efficacy than botulinum toxin A (Blanes-Mira et al., 2002). In cadaver skin, none was detected in the dermis (Kraeling et al., 2015). If you want a neurotoxin treatment, that's a decision to make with a clinician.

Is the copper peptide in Naturium the same as GHK-Cu? No. Copper palmitoyl heptapeptide-14 is a different molecule with no published research, so GHK-Cu studies don't apply to it. GHK-Cu's own human evidence is also limited (Miller et al., 2006).

Is a $25 peptide serum better than a $12 one? Price isn't evidence. Neither this serum nor Good Molecules' $12 serum has a published product study. The cheaper one discloses its peptide amounts, and this one doesn't.

References

1. Blanes-Mira C, et al. Int J Cosmet Sci. 2002. Developer study of Argireline: in vitro work plus a human test of a 10% emulsion over 30 days; n not reported in the abstract. https://pubmed.ncbi.nlm.nih.gov/18498523/
2. Wang Y, et al. Am J Clin Dermatol. 2013. Placebo-controlled RCT, n=60 (3:1), 4 weeks, periorbital Argireline; funding not stated in the abstract. https://pubmed.ncbi.nlm.nih.gov/23417317/
3. Aruan RR, et al. J Clin Aesthet Dermatol. 2023. Double-blind RCT, n=21, 8 weeks, comparing acetyl hexapeptide-3, palmitoyl pentapeptide-4 and placebo for crow's feet. https://pubmed.ncbi.nlm.nih.gov/36909866/
4. Kraeling ME, et al. Cutan Ocul Toxicol. 2015. In vitro diffusion study (US FDA authors) in human cadaver and hairless guinea pig skin, 24 hours. https://pubmed.ncbi.nlm.nih.gov/24754410/
5. Lim SH, et al. Sci Rep. 2018. In vitro permeation study of Argireline and modified analogues. https://pubmed.ncbi.nlm.nih.gov/29371611/
6. Hoppel M, et al. Eur J Pharm Sci. 2015. Porcine skin study comparing emulsion types for acetyl hexapeptide-8 delivery. https://pubmed.ncbi.nlm.nih.gov/25497319/
7. Mortazavi SM, Moghimi HR. Int J Cosmet Sci. 2022. Review of skin permeation of anti-wrinkle peptides. https://pubmed.ncbi.nlm.nih.gov/35302659/
8. Zdrada-Nowak J, et al. Int J Mol Sci. 2025. Review of acetyl hexapeptide-8. https://pubmed.ncbi.nlm.nih.gov/40565185/
9. Mestre R, et al. Biofabrication. 2021. 3D-printed lab-grown human muscle model using Argireline Amplified as a proof of concept; co-authors from the ingredient maker. https://pubmed.ncbi.nlm.nih.gov/34284359/
10. Miller TR, et al. Dermatol Surg. 2006. RCT, 13 completers, 12 weeks, GHK-Cu regimen after CO2 laser resurfacing. https://pubmed.ncbi.nlm.nih.gov/16847171/
11. Mortazavi SM, et al. 2025. Review of topical GHK/GHK-Cu. https://pubmed.ncbi.nlm.nih.gov/39963574/
12. Najafi et al. 2026. Systematic review of topical GHK/GHK-Cu. https://pubmed.ncbi.nlm.nih.gov/42787770/

Disclosure: We haven't tested this product. This article has no affiliate links and isn't sponsored by Naturium, e.l.f. Beauty or any other brand. It's for general information, not medical advice. Talk to a dermatologist or other clinician about prescription or in-office treatments. Price and ingredients are as listed on the brand's page on October 10, 2026; check the current label.

For educational purposes only; not medical advice. See our disclaimer and research method.