Quick Answer: COSRX The 6 Peptide Skin Booster Serum is a useful starting point if the goal is to compare several explicitly named peptides in a face serum. Beauty of Joseon's Pore Firming Serum and Revive Eye Serum offer different formulations and intended areas. Their ingredient lists do not establish a universal winner or show that more peptides produce better results. The comparison below explains what each label actually discloses.
On this page
- Three formulas compared
- Product names and earlier list corrections
- Published evidence matched to the formula
- What concentration arithmetic can tell you
- Choose by disclosed features
- Frequently asked questions
Three Korean peptide formulas compared
| Product | Named peptide ingredients identified | Other disclosed formulation features | What the list does not establish |
|---|---|---|---|
| COSRX The 6 Peptide Skin Booster Serum | Acetyl Hexapeptide-8; Copper Tripeptide-1; sh-Polypeptide-121; Dipeptide Diaminobutyroyl Benzylamide Diacetate; Oligopeptide-68; Palmitoyl Tripeptide-8 | Also lists glycerin, niacinamide and sodium hyaluronate | The active concentration of each peptide or superiority over the other products |
| Beauty of Joseon Pore Firming Serum: Red Bean PDRN + Peptide | Dipeptide Diaminobutyroyl Benzylamide Diacetate | Also lists sodium DNA, niacinamide and squalane | How much of a reported whole-formula result comes from the peptide |
| Beauty of Joseon Revive Eye Serum: Ginseng + Retinal | Palmitoyl Tripeptide-5 | An eye-area product that also lists retinal and ginseng root extract | An effect attributable to the peptide alone |
The six names in the COSRX row are a count of that published list, not a clinical score. A one-peptide formula cannot be ranked below it simply by counting names. The two Beauty of Joseon products also answer different shopping questions: a face serum versus an eye-area formulation.
Product names and earlier list corrections
The earlier page used an incorrect COSRX product name. The manufacturer's linked product is The 6 Peptide Skin Booster Serum. The previous name and numerical ranking have been removed rather than carried into a comparison of a different formula.
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Try the BMI Calculator →| Earlier listed brand/product family | Current official source inspected | What that source supports |
|---|---|---|
| Missha Time Revolution Night Repair | Night Repair Ampoule 5X | A ferment-focused ingredient list; no specifically named signaling peptide identified in the list used here |
| Some By Mi Snail Truecica | Snail Truecica Miracle Repair Serum | A snail-filtrate and botanical formulation; no specifically named signaling peptide identified in the published list used here |
These observations concern the exact linked formulas, not every product sold by either brand. Proteins, ferments and a named signaling peptide are not interchangeable label entries. A similarly named cream, a different generation or a regional formula may have a different list.
Published human evidence must match the peptide and formula
| Primary record | Actual comparison | Reported result | Can it rank the products above? |
|---|---|---|---|
| Robinson et al., 2005 | 93 women aged 35-55; twelve-week randomized split-face comparison of a moisturizer with 3 ppm pal-KTTKS against its control | Significant wrinkle/fine-line improvement on technical and grader assessments | No. Pal-KTTKS is not the same named peptide as the tripeptides in the comparison rows |
| Miller et al., 2006 | Post-laser skin-care regimens with or without topical GHK-Cu; thirteen completers | No significant between-group difference in objective erythema, wrinkles or skin quality; the patient questionnaire favored the GHK-Cu regimen | No. A post-laser regimen is not a head-to-head comparison of these retail serums |
The first study used two sides of the same participants' faces. Ninety-three participants do not become 186 independent people because two sides were assessed. The authors' affiliation was Procter & Gamble; that background belongs with the study rather than being replaced by an invented independence rating.
The second study illustrates why an objective measure and a subjective questionnaire should be reported separately. Its questionnaire finding does not erase the absence of a significant objective between-group difference.
Why “below one percent” does not automatically mean ineffective
The pal-KTTKS study used 3 parts per million. For the same mass-fraction convention, 1% equals 10,000 ppm and 3 ppm equals 0.0003%. That is roughly 3,333 times below 1%, yet the named study reported a benefit for its tested formulation. It does not establish that all peptides work at 3 ppm or that any of the retail products contains that amount.
| Input | Calculation | Result |
|---|---|---|
| 3 ppm | 3 / 10,000 | 0.0003% |
| 1% versus 3 ppm | 10,000 / 3 | Approximately 3,333.33-fold concentration ratio |
An ingredient list identifies components; it does not disclose every component's percentage or measure finished-product activity. The earlier shortcut using phenoxyethanol position as a universal efficacy threshold has been removed. The relevant comparison is the tested molecule, concentration, vehicle and endpoint.
Choose by the disclosed feature you actually want
- Several named peptides in one face serum: the COSRX list gives the clearest match among these three.
- A face formula combining a named peptide with sodium DNA: the Pore Firming Serum matches that ingredient preference.
- An eye-area formula containing retinal and a named peptide: the Revive Eye Serum matches that combination, rather than being a peptide-only comparison.
These are ingredient-based matches, not claims of personal wear testing, clinical superiority or guaranteed results. Manufacturer testing describes the finished formula under its stated conditions; it cannot isolate one ingredient without a suitable comparison. Check the exact product list being purchased when a formulation changes.
Frequently asked questions
Does six peptides mean better results than one?
The number of names does not establish concentrations, delivery or a clinical comparison. The listed human studies do not test that six-versus-one question.
Can copper tripeptide evidence substitute for every palmitoyl peptide?
No. Copper Tripeptide-1, Palmitoyl Tripeptide-5, Palmitoyl Tripeptide-8 and pal-KTTKS identify different materials. A study of one does not become a study of the others.
Is a manufacturer result the same as a published controlled trial?
It is a separate source. Its sample, comparison and endpoint need to be reported as disclosed. A customer review count is also different from a trial participant count.
Which is the best Korean peptide serum?
Among the linked products, the best ingredient match depends on whether the goal is a multi-peptide face serum, a sodium-DNA combination or an eye-area retinal formula. The available records do not establish one clinical winner for all three uses.
Manufacturer lists and primary studies
- COSRX: The 6 Peptide Skin Booster Serum
- Beauty of Joseon: Pore Firming Serum
- Beauty of Joseon: Revive Eye Serum
- Missha: Night Repair Ampoule 5X
- Some By Mi: Snail Truecica serum
- Robinson et al., topical pal-KTTKS randomized study
- Miller et al., topical GHK-Cu after laser resurfacing
Platform Disclaimer: FormBlends is an informational platform. Content on this page does not constitute medical advice and is not a substitute for consultation with a qualified healthcare provider.
Research Compound or Compounded Medication Disclaimer: This page discusses cosmetic over-the-counter skincare products. It does not discuss prescription drugs, research-use-only compounds, or compounded medications. No products discussed here require a prescription.
Results Disclaimer: Skincare results vary by individual. Published study findings reflect population-level data; individual responses depend on skin type, baseline condition, product concentration, application technique, and consistency of use. No results are guaranteed.
Trademark Disclaimer: Brand names (COSRX, Missha, Beauty of Joseon, Some By Mi, Skin1004, Mediheal, The Ordinary, Matrixyl, Argireline) are trademarks of their respective owners. Use of these names is for identification and comparative review purposes only. FormBlends has no affiliation with these brands and received no compensation for any product mention.
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