Why Cu²⁺ : Peptide Ratio Matters — A 90-Second Quality Check for Formulators. Read our briefing →
Why Cu²⁺ Ratio Matters — a field guide. Read →
On the Cu²⁺ ratio. Read →
Who We Work With
Copper peptides have a long association with the scalp and hair category, and a serious brand working in that space wants a supplier who can support the chemistry without drifting into claims the category does not permit. We supply AHK-Cu and GHK-Cu to hair and scalp brands on strictly cosmetic, educational ground — documented coordination, consistent lots, and the carrier-stability reasoning a tonic or serum needs.
The work
We will say this part plainly, because it matters: we support hair and scalp brands as a cosmetic-ingredient supplier, and we do not make or endorse hair-growth, regrowth, or any medical claim about copper peptides. What we can do well is the chemistry and the sourcing — supply AHK-Cu and GHK-Cu whose coordination is documented, keep the lots consistent, and help you reason about how a copper peptide behaves in the carriers a scalp product actually uses. The claims you build on top of that are yours to make within your market's cosmetic rules.
A scalp or hair context puts its own demands on a copper peptide. Leave-on tonics, rinse-off treatments, and alcohol- or humectant-heavy carriers each present a different chemical environment, and copper(II) coordination responds to all of them — to pH, to competing chelators, to the company the active keeps in the formula. The work we do for a hair brand is to remove uncertainty about the active itself: each lot leaves with the colour, copper content, and Cu²⁺ : peptide ratio that document its coordination, so when you tune a scalp serum the question is your carrier, not our raw material.
And we treat the underlying science as something to share rather than to gesture at. The Field Notes below cover the scalp-and-hair research literature in measured, non-promotional terms, the sourcing fundamentals of what a copper tripeptide actually is, and the pH window a copper-peptide solution is comfortable in — the reasoning a formulator needs to make good decisions, kept carefully clear of efficacy claims we are not in a position to make.
What we hand over
Regions served: Hair & scalp brand R&D across South Korea · Japan · the EU · North America · the UK.
Copper systems for this work
Before a first lot
No — and we will not, because that would mean making a medical or therapeutic claim, which is outside both the cosmetic category and our role as an ingredient supplier. What we provide is sourcing and chemistry support: documented coordination, lot consistency, and a sober summary of the published scalp-and-hair research. Any cosmetic claim your product makes is yours to substantiate under your destination market's rules.
Both are copper tripeptides used in the category and we supply each; the practical difference is one of coordination geometry rather than a claim we would make for you. We can talk through how each behaves in a given carrier so the choice fits your formulation rather than a marketing line. Our Field Note on the GHK-Cu versus AHK-Cu coordination difference is the best starting point.
Coordination stability depends on the carrier's pH and what else competes for the copper, and a scalp tonic, a rinse-off treatment, and a humectant-heavy serum each pose that question differently. We can share the relevant stability framing and lot-level data on request; because the meaningful variable is usually your carrier, we are glad to discuss what to test in your specific format. The pH-stability Field Note is the starting point.
Yes — sampling first is the norm. We send a sample of the active you specify with that lot's spectrum and copper ratio so you can trial it in a scalp carrier before any volume commitment; MOQ is quoted per active and grade at inquiry. Tell us your format and stage and we will size a sensible first step rather than push bulk early.
From the library
Application Notes
Copper Tripeptides in Scalp & Hair-Care Formulation — A Sourcing and Coordination-Chemistry Note
Read
Sourcing Primer
What Is GHK-Cu? A Copper-Chemistry Sourcing Primer for Buyers
Read
Coordination Chemistry
GHK-Cu vs AHK-Cu — Why One Methyl Group Changes the Coordination Geometry
Read
Formulation
Cu-Peptide Solution Stability Across pH 5-7 — The Carrier Chemistry Window
Read
Other work
Skincare Formulators
Bench formulators working GHK-Cu and AHK-Cu into serums, creams, and ampoules — where coordination integrity, carrier compatibility, and the blue of the lot decide whether the formula holds.
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Brand Owners
Brands building copper peptide into a hero ingredient — where the sourcing story, the authenticity of the coordination, and COA literacy become part of how the product is sold.
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Contract Manufacturers
Contract manufacturers who need consistent bulk copper-peptide supply, defensible lot data, copper-content verification, and stability evidence that survives a client's incoming-QC.
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From the Atelier
First response under 12 hours. We send a 25 g sample of the active you specify, the lot's UV-Vis spectrum, the Cu²⁺ : peptide ratio measurement, and a feasibility note for the formulation application you have in mind.