Papa & Filles research · Checked 28 October 2026
How much copper peptide is in the bottle?
We read the product pages of 16 copper peptide serums from other brands, for scalp and face, and put ours next to them. We wrote down what each brand tells you. Not what's in them. What they say is in them, and whether they show their working.
11 of 16
put a number on the copper peptide.
2 of 16
say how much is in the bottle, in milligrams.
2 of 16
publish a lab test of the finished product. The same two.
Why a percentage isn't the whole answer
Brands buy copper peptides as a dry powder or as a ready-made solution. A solution is mostly water. So “10%” can mean 10% of the finished serum, or 10% of a solution that then gets diluted again. Both are written the same way on a label.
The clear way to say it is milligrams per bottle, or percent by weight of the finished product. The clear way to prove it is a lab test of the batch you're buying. That's what the last two columns check.
The five questions
- Full ingredient list
- Every ingredient, in order. Not just the highlights.
- Amount stated
- The brand's own words, quoted.
- Tied to the bottle
- Does the number say what it's a percentage of?
- Company named
- A company or a real address you could write to.
- Lab test shown
- A certificate for the finished product, linked on the page. Saying “tested” doesn't count.
The index
Ranked by score in each group, out of 5: a Yes counts 1, a Partly counts ½. Ties are listed alphabetically. Each row links to the page we read. Scroll sideways on a phone.
| Product | Score | Full ingredient list | Amount stated | Tied to the bottle | Company named | Lab test shown |
|---|---|---|---|---|---|---|
| Scalp and hair | ||||||
| Neurogan HealthGHK-Cu Copper Peptide Hair & Scalp SerumSource | 5 / 5 | Yes | “4% GHK-Cu”, 2,400 mg per bottle | YesMilligrams per bottle | YesName and address | YesBatch certificate, peptide measured |
| Papa & FillesDual Peptide Scalp SerumOursProduct page | 5 / 5 | YesAll 18 ingredients | 1% GHK-Cu and 0.5% AHK-Cu, by weight | Yes% by weight of the finished serum | YesName and city | YesBatch certificate: pH, microbes, heavy metals |
| HairgenetixCopper Peptide Hair Serum (GHK-Cu & AHK-Cu)Source | 2½ / 5 | PartlyKey ingredients only | “10% GHK-Cu & 5% AHK-Cu” | NoNot said | YesIn terms of service | NoSays tested, no report linked |
| Mane23Advanced Copper Peptide Hair & Scalp SerumSource | 2½ / 5 | PartlyKey ingredients only | “4% total concentration” | NoNot said | YesName and address | NoSays tested, no report linked |
| BriogeoDestined for Density Peptide Hair SerumSource | 2 / 5 | YesFrom retailer listing | Not stated | — | YesIn terms of service | No |
| CopperTheory1.4% GHK-Cu Copper Peptide Hair SerumSource | 2 / 5 | Yes | “1.4% GHK-Cu” | NoNot said | NoCity only | NoCertificates for verified buyers only |
| DiviScalp SerumSource | 2 / 5 | Yes | Not stated | — | YesIn terms of service | No |
| Peptide LabzCopper Peptide Hair Serum, GHK-Cu and AHK-CuSource | 2 / 5 | PartlyKey ingredients only | “10% GHK-Cu and 5% AHK-Cu of the active ingredients” | PartlyOf the actives, not the bottle | NoBrand name only | No |
| PURA D'ORHair Thinning Therapy Energizing Scalp SerumSource | 2 / 5 | Yes | Not stated | — | YesIn terms of service | NoMentions lab testing, no results |
| Face | ||||||
| Neurogan HealthGHK-Cu Copper Peptide Neck & Face SerumSource | 5 / 5 | Yes | “4% GHK-Cu, 1,200 mg per 30 mL bottle” | YesMilligrams per bottle | YesName and address | YesBatch certificate, peptide measured |
| NIODCopper Amino Isolate Serum 3 1:1Source | 3 / 5 | Yes | “1% copper peptides (GHK-Cu)” | NoNot said | YesIn footer | No |
| Peach & LilyCopper Peptide Pro Firming SerumSource | 3 / 5 | Yes | “0.2% copper peptide” | NoNot said | YesIn terms of service | No |
| The OrdinaryMulti-Peptide + Copper Peptides 1% SerumSource | 3 / 5 | Yes | “1%”, in the product name | NoNot said | YesName and address | No |
| Allies of SkinCopper Tripeptide & Ectoin Advanced Repair SerumSource | 2½ / 5 | YesFrom retailer listing | “1% Copper Tripeptide Complex” | PartlyOf a complex, not pure peptide | Couldn’t check | No |
| Wildsmith SkinActive Repair Copper Peptide SerumSource | 2 / 5 | Yes | Not stated | — | YesName and address | No |
| BiossanceSqualane + Copper Peptide Rapid Plumping SerumSource | 1½ / 5 | Yes | Not stated | — | PartlyParent group only | No |
| Dr.Reju-AllAdvanced PDRN Copper Peptide SerumSource | 1½ / 5 | PartlyFull list on retailer only | “1% Multi-Peptide + Copper Peptides” | NoNot said | NoBrand name only | No |
Same five questions
Our own row
We make a copper peptide scalp serum. That's why we did this, and it's why you should check our work too.
Here's ours, held to the same five questions.
Shop the Dual Peptide Scalp Serum- Product
- Dual Peptide Scalp Serum, 30 mL, $79 CAD
- Full ingredient list
- Yes. All 18 ingredients, in order, on the product page.
- Amount stated
- 1% Copper Tripeptide-1 (GHK-Cu) and 0.5% Copper Tripeptide-3 (AHK-Cu).
- Tied to the bottle
- Yes. Percent by weight of the finished serum, from our manufacturer's formula. That works out to about 310 mg of GHK-Cu and 155 mg of AHK-Cu per bottle.
- Company named
- Yes. Papa & Filles, King City, Ontario.
- Lab test shown
- Yes. A finished-product certificate for this batch: pH 5.58, microbes under 10 CFU/g, and heavy metals well under limits (lead 0.02 mg/kg; arsenic, mercury and cadmium below detection). Read the certificate (PDF)
How we did this
Every entry comes from the brand's own product page, or a major retailer's listing where the brand's site wouldn't load. We checked them all on 28 October 2026. Brands change their pages, so some of this will date.
We only looked at what brands publish. We didn't test anyone's product. One product per brand in each group. We left out supplements, injectables and anything sold for research use. “Couldn't check” means the brand's site wouldn't load for us, not that the information isn't there.
Got something wrong?
If we've misread your product, or missed it, email info@papafilles.com with a link to the page that says otherwise. We'll fix it and note the change here.
Want to cite this? Link to this page and name the date we checked.