Peptide education
Acetyl octapeptide-3
SNAP-8
Acetyl octapeptide-3 is a synthetic peptide made of eight amino-acid building blocks. It is used in skin-care products and is also known as SNAP-8.
A small controlled study found better wrinkle measures with a combination microneedle patch than with a hyaluronic-acid-only patch. The peptide's individual contribution was not measured.
Overview
Quick answer
A dissolving microneedle patch and an ordinary cream or serum deliver their ingredients differently. A result from a combination patch cannot identify the effect of one ingredient or predict the result of a different product.
What has been tested in people?
Small studies have examined patches and a serum containing the peptide with other ingredients. One patch was compared with a hyaluronic-acid-only patch; the serum study compared participants' skin with its earlier appearance.
Does the patch prove the peptide works on its own?
No. The controlled patch contained two other active ingredients, so its results cannot be attributed to the octapeptide alone.
Is it the same as acetyl hexapeptide-8?
No. They are related peptides with different lengths. A safety assessment of one does not automatically apply to the other.
Evidence
Evidence snapshot
A combination patch improved several wrinkle measures versus a hyaluronic-acid-only patch.
The abstract reports skin measurements but does not describe a placebo group.
The tested patches and serum contained several potentially active ingredients.
The patch comparison reported no adverse effects; two serum-study completers reported skin discomfort or irritation.
Claims
Common claims vs evidence
| Claim | Human evidence | Mechanistic evidence | Verdict |
|---|---|---|---|
| Acetyl octapeptide-3 alone produces the patch's wrinkle improvement. | The controlled patch also contained two other active ingredients. | The patch's design does not separate the action of its components. | The observed effect belongs to the combination and delivery system. |
| A serum will perform like a microneedle patch. | A separate serum study did not compare the serum with a matching patch or control serum. | Dissolving microneedles penetrate the outer skin barrier. | Delivery and formulation differences prevent a direct comparison. |
Bottom line
Main takeaway
The human results concern mixtures, not an isolated peptide.
A cream and a dissolving microneedle patch are different formulations.
Separate product results from ingredient effects and account for commercial funding and affiliations.
Identity
What it is
Acetyl octapeptide-3 is an eight-residue synthetic peptide used in cosmetic products. The controlled patch study describes its relationship to a SNAP-25-derived sequence.
The studied patches also included hyaluronic acid and additional ingredients, with different compositions in the two studies.
Research
Research evidence
The studies summarized here tested combination microneedle patches or a multi-ingredient serum. They describe their finished products and routines, not the octapeptide in isolation.
| Study / evidence area | Population | Design | Product context | Main outcome | Limitations | Weight |
|---|---|---|---|---|---|---|
| Controlled split-face patch study | 24 adults with eye-area wrinkles enrolled; 21 completed | Combination patch versus hyaluronic-acid-only patch over 28 days | Dissolving patch containing acetyl octapeptide-3, an ascorbic-acid derivative, and sodium cyclic lysophosphatidic acid | Several wrinkle measures improved more with the combination patch; no adverse effects were reported. | Small, short study with multiple actives. Authors were affiliated with Raphas; the paper acknowledges its support but states no funding source. | Limited human evidence for the combination |
| Single-center combination patch study | Healthy participants with aged skin | Twelve-week formulation study | Hyaluronic-acid microneedles with acetyl octapeptide-3, an arginine and lysine polypeptide, palmitoyl tripeptide-5, adenosine, and seaweed extracts | The authors reported improved wrinkle and hydration measurements and no reported skin reactions. | The abstract does not describe a placebo group; the ingredients cannot be assessed separately. PubMed lists Imperial Bioscience as a funder. | Preliminary product observation; control group not described in the available abstract |
| Single-group serum study | 33 women enrolled; 31 completed | Twelve-week comparison with each participant's skin before use | Multi-ingredient serum used with cleanser, moisturizer, and sunscreen | The authors reported improved skin measurements from baseline; two completers reported discomfort or irritation. | No separate control or peptide-only group was used. Investigators judged the skin complaints unrelated to the product. The authors were employees of a funder, Colgate-Palmolive, and PCA Skin also funded the study. | Preliminary observation for the complete routine |
Use context
Reported use context
The reported schedules describe the tested patches and serum routine, not recommendations for other products.
Study and label context
The paper listed 0.03% SNAP-8 in the patch composition. The patch was applied at night daily for 14 days, then every three days through day 28.
The percentage basis is not specified. The patch contained two other active ingredients and was compared with a hyaluronic-acid-only patch.Patches were applied near the outer eye corners and to a forearm area during a 12-week study.
The abstract does not specify the octapeptide concentration or describe a placebo group.Participants used the serum twice daily for 12 weeks with a supplied cleanser, moisturizer, and sunscreen.
The serum contained other ingredients and was not compared with a peptide-free version.Cautions
Safety and unknowns
- The controlled patch study reported no adverse effects among 21 completers during 28 days. It was too small and short to establish rare reactions or long-term tolerability.
- Two of 31 serum-study completers reported skin discomfort or irritation. One additional enrollee withdrew after a serious event. Investigators judged these events unrelated to the product; the study did not establish the safety of the octapeptide on its own.
- Reactions can depend on the complete formulation, adhesive, and delivery method.
- A safety conclusion for acetyl hexapeptide-8 cannot be transferred to this different peptide.
Product quality
Product identity and quality
A patch, cream, and serum can differ in composition, concentration, and skin delivery.
Peptide identity
The octapeptide is distinct from the related hexapeptide.
Product form
The controlled result used a dissolving microneedle patch.
Other ingredients
The studied patches contained additional active ingredients.
Mechanism
How it is proposed to work
The peptide is based on a sequence associated with SNAP-25, a protein involved in cellular signaling. The combination patch did not test whether this peptide changed muscle activity in participants.
The controlled patch contained hyaluronic acid and three named functional ingredients. Its comparator did not isolate any individual active.
Details
Technical details
Sources
References
- 1.
doi:10.5021/ad.23.136 PMID:39082657
A split-face comparison enrolled 24 participants and had 21 completers. It tested a multi-ingredient patch against a hyaluronic-acid patch. Authors were affiliated with Raphas; the acknowledgments cite its support while the funding statement says none.
- 2.
doi:10.1111/jocd.13009 PMID:31134751
A 12-week study of a combination patch; the abstract does not describe a placebo group. PubMed lists Imperial Bioscience as a funder.
- 3.
Journal of Cosmetic Dermatology. Peptide-pro complex serum: Investigating effects on aged skin
doi:10.1111/jocd.14992 PMID:35426243
A 12-week, single-group study enrolled 33 women and analyzed 31 completers using a multi-ingredient serum and supporting skin-care products. The authors were Colgate-Palmolive employees and the research was funded by Colgate-Palmolive and PCA Skin.
- 4.
FDA. Is It a Cosmetic, a Drug, or Both? (Or Is It Soap?)
A product's intended use affects its US regulatory classification.