The Copper Peptide Standard

Copper coordination
is a chemistry problem,
not a catalogue SKU.

Cupratec is the atelier behind copper-bound peptide actives for cosmetic, dermatology, hair-scalp, and licensed mesotherapy programmes. Ask sales for the matching batch COA and agree any UV-Vis spectrum, Cu²⁺ : peptide ratio, or solution-stability work the project requires — because copper coordination is a chemistry problem, not a catalogue SKU.

Read the Cu²⁺ Field Note

Response under 24 hours

B2B brand operators only

Made in grams, not tonnes

UV-Vis · Illustrative GHK-Cu lot

GHK-Cu · Lot CT-26-A0517

λmax ~606 nm

CAS

89030-95-5

MW (complex)

401.91

Cu : Pep

1.00 ± 0.05

Per Lot

UV-Vis + Cu²⁺ ratio

g-scale

Atelier batches

<24h

Response

The Cupratec Atelier Promise — Evidence Matched by Batch

Cu²⁺ : Peptide Ratio — Per Lot

UV-Vis Spectrum — Per Lot

Solution Stability — 6-Month Data

Color ΔE < 1.0

Made in Grams, Not Tonnes

New 30 ml SKU · Two Copper Flagships

BAC Water 30 ml, followed by two flagship copper peptides.

The new BAC30 presentation is now available alongside the focused copper-coordination library led by GHK-Cu and AHK-Cu. Every product links directly to its specification and inquiry path.

New ancillary · reconstitution diluent

New · 30 ml

BAC Water

New 30 ml bacteriostatic-water presentation

3 ml · 10 ml · 30 ml · SKU BAC30

Sterile water preserved with 0.9% benzyl alcohol for compatible laboratory reconstitution workflows. The new 30 ml format joins the established 3 ml and 10 ml presentations and is available for quotation under BAC30.

View Lot Data

Active · Cu(II) tripeptide

Dermal · anti-ageing

GHK-Cu

Copper Tripeptide-1 · the textbook copper-bound tripeptide

CAS 89030-95-5 · MW 401.91 · Purity ≥ 99.0%

The reference Cu(II)-tripeptide complex — Gly-His-Lys coordinated 1:1 to a divalent copper ion through three nitrogen donors plus a carboxylate oxygen, forming the field that gives the material its diagnostic blue. Ask sales for the COA covering the offered or supplied lot; any UV-Vis, Cu²⁺ ratio, or stability package is confirmed as part of the written analytical scope.

View Lot Data

Active · Cu(II) tripeptide

Scalp · hair-care

AHK-Cu

Copper-bound Ala-His-Lys · the copper active for scalp and hair-care work

Sequence AHK · 1:1 Cu²⁺ complex · Purity ≥ 99.0%

The structural analog to GHK-Cu, with the N-terminal glycine swapped for alanine — the substitution reshapes the geometry around the copper, which is why the cosmetic literature associates AHK-Cu most often with scalp and hair-care formulation. Ask sales for the matching batch COA and define any added copper-characterization or formulation-stability work before quotation.

View Lot Data

A copper-peptide specialist by design: every copper active is coordinated and released in-house against the full Cu²⁺ panel — molar ratio, the ~606 nm d-d band, and colour ΔE against the master lot. Need a copper peptide beyond the catalogue?

Inside the Atelier

Two flagships, a focused library. Three ways to work with us.

Beyond the two flagship copper peptides — and their apo-ligands, metal analogues, and made-to-order blends — Cupratec runs an atelier of method, custom synthesis, and editorial. Pick the doorway that matches what your formulation programme needs next.

Methodology

The Craft

How we coordinate the copper, hold the complex through purification, and prove it on every single lot — the atelier methodology behind the two actives.

Read the method

Editorial

Field Notes

Editorial briefs for formulators — why the Cu²⁺ ratio matters, how to read a Cu-peptide UV-Vis spectrum, formulation guardrails for the working window.

Read the latest note

Cupratec lot-release bench with copper-peptide vials photographed under the inspection lamp.

Lot-release bench · captured during a production day

Lot Data, Matched by Batch

The numbers verify the chemistry.

A blue powder is not enough to define copper coordination. Ask sales for the COA covering the offered or supplied lot, then agree any additional Cu-specific characterization your formulation or buyer procedure requires.

~606 nm

λmax · Cu(II) d-d band

ΔE < 1.0

Color vs. master lot

6-month

Solution stability data

UV-Vis spectrum can be scoped for λmax position and absorbance at brand-relevant wavelengths.

Cu²⁺ : peptide molar ratio by an agreed suitable method, with method and tolerance defined before testing.

Solution stability + color ΔE, available as a product- and formulation-specific project scope when capability, timing, and cost are confirmed.

View a sample lot report (PDF)Inside the lot-data programme

Field Notes

Editorial briefs, written at the bench.

Short, chemistry-literate pieces for formulators who already know what GHK-Cu is and need to know how to read its lot data.

All Field Notes

Coordination Chemistry

Published June 2, 2026

7 min read

GHK-Cu vs Copper Lysinate/Prolinate (Neodermyl) — Two Copper-Collagen Routes Compared

Both carry cosmetic copper into a collagen-support brief, but one wraps Cu(II) in a histidine-anchored tripeptide pocket and the other in a pair of free amino acids. The ligand difference reshapes the colour, the solubility, the stability envelope, and the release file. Why a copper-chemistry house documents them as two distinct actives rather than one copper.

Read the Field Note

Case Studies

Work from the bench, told plainly.

Anonymized accounts of how med-aesthetic brands, clean-beauty labels, formulators, and contract manufacturers source copper-bound peptide actives — every name removed, the coordination chemistry and documented outcome kept intact.

View all case studies

Med-Aesthetic BrandEuropean Union

An EU med-aesthetic group launched a private-label GHK-Cu serum within its marketing window

A multi-location EU aesthetic-medicine group wanted a retail copper-peptide serum under its own clinic brand but had no formulation or notification capability in-house. The private-label workflow carried it from signed brief to first shipment inside the window the launch needed.

Signed brief → first shipment

Inside the launch window

CPNP chemistry file

Cleared without a rework round

Stability programme

Real-time + accelerated

Reorder match

Coordination held across lots

Read the story

Clean-Beauty BrandNorth America

An indie clean-beauty brand kept its copper serum genuinely coordinated after a chelator-free reformulation

A small clean-beauty label had built a GHK-Cu serum around a 'no synthetic chelators' promise, then watched the colour drift between batches. The fix was upstream — a documented coordination state to formulate against, and the chemistry reasoning to rebuild the carrier.

Per-lot data

UV-Vis + Cu²⁺ : peptide ratio

Colour control

Held to a master swatch

Root cause

Isolated to carrier, not active

Clean-claim

Kept, coordination intact

Read the story

Contract ManufacturerEast Asia

A contract manufacturer qualified GHK-Cu so the lot data held up at its client's incoming QC

A contract manufacturer making a copper-peptide serum for a brand client needed an active whose documentation survived inspection twice — its own incoming check and the client's audit of the finished good. The qualification turned on copper-quantification method and re-auditable lot data.

Lot data

Re-auditable at client QC

Optional copper scope

Agreed before quotation

Coordination

Evidenced, not assumed

Supply

Schedulable across the run

Read the story

From the Atelier

Sample a Cupratec lot.

First response under 24 hours. Ask sales for a sample and its matching batch COA, then specify any UV-Vis, Cu²⁺ : peptide ratio, or formulation-feasibility evidence the project requires so availability, timing, and cost can be confirmed.

Copper coordination
is a chemistry problem,
not a catalogue SKU.

BAC Water 30 ml, followed by two flagship copper peptides.

BAC Water

GHK-Cu

AHK-Cu

Two flagships, a focused library. Three ways to work with us.

The Craft

Custom Cu-Peptide

Field Notes

The numbers verify the chemistry.

Editorial briefs, written at the bench.

GHK-Cu vs Copper Lysinate/Prolinate (Neodermyl) — Two Copper-Collagen Routes Compared

Work from the bench, told plainly.

An EU med-aesthetic group launched a private-label GHK-Cu serum within its marketing window

An indie clean-beauty brand kept its copper serum genuinely coordinated after a chelator-free reformulation

A contract manufacturer qualified GHK-Cu so the lot data held up at its client's incoming QC

Sample a Cupratec lot.

Messages

Copper coordination
is a chemistry problem,
not a catalogue SKU.

BAC Water 30 ml, followed by two flagship copper peptides.

BAC Water

GHK-Cu

AHK-Cu

Two flagships, a focused library. Three ways to work with us.

The Craft

Custom Cu-Peptide

Field Notes

The numbers verify the chemistry.

Editorial briefs, written at the bench.

GHK-Cu vs Copper Lysinate/Prolinate (Neodermyl) — Two Copper-Collagen Routes Compared

Work from the bench, told plainly.

An EU med-aesthetic group launched a private-label GHK-Cu serum within its marketing window

An indie clean-beauty brand kept its copper serum genuinely coordinated after a chelator-free reformulation

A contract manufacturer qualified GHK-Cu so the lot data held up at its client's incoming QC

Sample a Cupratec lot.

Copper coordination is a chemistry problem, not a catalogue SKU.

BAC Water 30 ml, followed by two flagship copper peptides.

BAC Water

GHK-Cu

AHK-Cu

Two flagships, a focused library. Three ways to work with us.

The Craft

Custom Cu-Peptide

Field Notes

The numbers verify the chemistry.

Editorial briefs, written at the bench.

GHK-Cu vs Copper Lysinate/Prolinate (Neodermyl) — Two Copper-Collagen Routes Compared

Work from the bench, told plainly.

An EU med-aesthetic group launched a private-label GHK-Cu serum within its marketing window

An indie clean-beauty brand kept its copper serum genuinely coordinated after a chelator-free reformulation

A contract manufacturer qualified GHK-Cu so the lot data held up at its client's incoming QC

Sample a Cupratec lot.

Copper coordination is a chemistry problem, not a catalogue SKU.

BAC Water 30 ml, followed by two flagship copper peptides.

BAC Water

GHK-Cu

AHK-Cu

Two flagships, a focused library. Three ways to work with us.

The Craft

Custom Cu-Peptide

Field Notes

The numbers verify the chemistry.

Editorial briefs, written at the bench.

GHK-Cu vs Copper Lysinate/Prolinate (Neodermyl) — Two Copper-Collagen Routes Compared

Work from the bench, told plainly.

An EU med-aesthetic group launched a private-label GHK-Cu serum within its marketing window

An indie clean-beauty brand kept its copper serum genuinely coordinated after a chelator-free reformulation

A contract manufacturer qualified GHK-Cu so the lot data held up at its client's incoming QC

Sample a Cupratec lot.

Copper coordination
is a chemistry problem,
not a catalogue SKU.

Copper coordination
is a chemistry problem,
not a catalogue SKU.