Copper Lysinate/Prolinate and GHK-Cu are not the same ingredient

“Copper peptide” is shorthand for more than one ingredient. The two you will meet most often are Copper Tripeptide-1, usually written GHK-Cu, and Copper Lysinate/Prolinate. They are different materials with different evidence behind them. Ozera’s 001 Copper Peptide Cream contains Copper Lysinate/Prolinate. It does not contain GHK-Cu.

Why the confusion exists

Both ingredients contain copper, and both are sold in the same category. Search results, product titles and comparison articles often treat “copper peptides” as a single thing. That hides a real difference. If you went looking for one and bought the other, the label told you, but only if you read the ingredient list and not the front of the bottle.

Copper Tripeptide-1 (GHK-Cu)

GHK-Cu is copper bound to a three-amino-acid peptide: glycine, histidine and lysine (the letters G, H and K). It is the more widely studied of the two, and it is usually what an article means when it says “copper peptides.” It appears in serums at many price points.

If GHK-Cu is what you want, look for Copper Tripeptide-1 in the ingredient list. “Copper peptide” on the front label doesn’t confirm it. The ingredient’s position in the list doesn’t tell you the concentration either, unless the brand states one and can support it.

Copper Lysinate/Prolinate

Ingredient references describe Copper Lysinate/Prolinate as copper bound to a mixture of two amino acids, proline and lysine, and classify it as a skin-conditioning ingredient. Technically it is an amino acid–copper complex rather than a peptide. It is part of a supplier complex sold to brands as Neodermyl, whose other named component is Methylglucoside Phosphate. On a label, the two often appear side by side.

The supplier attributes appearance-related benefits to the complex. Those are manufacturer claims. Independent ingredient databases present them as such, not as established outcomes, and we won’t repeat a supplier’s marketing as if it were settled science.

Other copper names you may see

Copper appears in cosmetics under several other INCI names, for example Copper PCA and Copper Gluconate. These are copper salts, not the peptides above. The lesson is the same for all of them: the exact name is the fact, and a category word is not.

How to check any product in 30 seconds

1. Open the full ingredient list, not the highlights.
2. Search for “copper.” Note every name that contains it.
3. Match the name: Copper Tripeptide-1 is GHK-Cu. Copper Lysinate/Prolinate is the Neodermyl ingredient. Anything else is a different material.
4. If the front label says “copper peptides” and the list has none of these, ask the brand before you buy.

What we will and won’t say about ours

We will tell you exactly what is in the bottle: Copper Lysinate/Prolinate, with aloe leaf juice, glycerin, and cranberry, moringa, neem and eclipta extracts, in a fragrance-free cream. The complete ingredient list is on the 001 Copper Peptide Cream page, in order, with nothing left out. Our cream guide explains each ingredient.

We won’t tell you it does something we can’t support. We don’t publish concentration percentages, because they haven’t been verified to us in writing. We don’t publish before-and-after images. We hold no certifications, and we don’t display seals we haven’t earned. Our editorial standards set this out in full.

So which should you choose?

• If you specifically want GHK-Cu, choose a product that lists Copper Tripeptide-1. Ours doesn’t, and we would rather you know that now than after you buy.
• If you want a fragrance-free daily cream with a fully published formula, ours is one option. Read the full list first.
• Compare size with price, not price alone. A 30 ml serum and a 50 ml cream are different purchases. How to compare peptide moisturizers.
• Treat a supplier’s claim as a supplier’s claim, whoever repeats it.

A note on safety

Everything here is about topical cosmetics. Copper peptides sold for injection are a different product category with a very different risk profile. Read our explainer on topical versus injectable copper peptides.

A brand that tells you which ingredient it does not contain is easier to check than one that lets a category name do the work.

The full ingredient list, size and directions are on the 001 Copper Peptide Cream page. Read it before you buy, not after.

Photography: Tuaans / Unsplash.