Good Molecules Super Peptide Serum Contains 5 ppm Copper Peptide

This one is unusual enough to deserve its own page, and not for the reason you might expect from a competitor writing it.

The short answer

Good Molecules Super Peptide Serum discloses Copper Tripeptide-1 at 5 ppm. That is 5 parts per million, or 0.0005%.

They also publish a formulation pH of 6.09, to two decimal places. It is $12 for 30ml.

Putting 5 ppm in context

1% is 10,000 ppm. So 5 ppm is one two-thousandth of a 1% concentration.

Across the 23 products we checked, disclosed concentrations ranged from this 5 ppm up to 4%. That is an 8,000-fold spread inside a single product category, all sold under the same "copper peptide serum" description.

Copper Tripeptide-1 sits 15th of 16 ingredients here, which is exactly consistent with the stated figure. The disclosure and the ingredient list agree, which is its own quiet mark of honesty.

Why we are giving them credit

It would be easy for a competitor to use this as a gotcha. We would rather make the opposite point.

Good Molecules published an unflattering number to four decimal places when nobody made them. Nine of the 23 products we checked published nothing at all, and several of those almost certainly contain more copper peptide than this one. Disclosing a small number is harder than disclosing a large one, and considerably harder than disclosing nothing.

They also published a pH, which only 4 of 23 products did.

If the whole category disclosed like this, buyers could actually compare products, and our own argument for transparency would be less distinctive. We would take that trade.

What it means for buying it

The product is not primarily a copper peptide serum, and the name does not claim to be. It is a multi-peptide serum at $12 in which copper is one component among several at trace level.

If you want a copper peptide as a supporting note in a broad peptide blend, that is a coherent thing to buy and $12 is a fair price for it. If you specifically want a copper peptide signal at a concentration the literature works at, 5 ppm is not that, and their own page gives you everything you need to work that out before you spend anything.

The general lesson

Two products can both be truthfully described as copper peptide serums and differ by a factor of 2,000 in the ingredient that gives them the name. The label will not tell you which one you are holding. Only a stated number will.

Related

• The disclosure index, with all 23 products and their stated concentrations.
• What percentage of GHK-Cu actually matters.
• The six specs that decide a copper peptide serum.

Checked 24 August 2026 against goodmolecules.com. If this has changed, email support@amide.skin and we will update it.