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GHK-Cu

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Skin & cosmetic research

The dermatological and cosmetic research area - copper, melanocortin and signal peptides studied in skin remodelling, pigmentation and appearance.

Cosmetic-peptide research studies compounds acting on skin and pigmentation biology: GHK-Cu (a copper-binding tripeptide studied for collagen synthesis and skin remodelling), the melanocortin peptides Melanotan-1 and Melanotan-2 (studied for melanogenesis), and signal peptides such as SNAP-8 (studied for expression-line research).

This hub groups the research compounds New-U supplies in this area alongside the on-site guides that summarise the published science.

2 of the 5 compounds in this area have a current published Certificate of Analysis from an independent laboratory, linked on its card below and listed at /coa.

Research compounds in this area

Research reading

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peptides for skin collagen

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Explore Skin & cosmetic research

Per-compound research guides, side-by-side comparisons and current analytical evidence for the compounds studied in this area. Research use only.

Research guide GHK-Cu research guide GHK-Cu shuttles copper into cells and rewires gene expression toward a pro-repair, anti-inflammatory state, stimulating collagen and blood… Read the guide →

Research guide AHK-Cu research guide AHK-Cu binds copper(II) through its central histidine imidazole and delivers it to cells. Read the guide →

Research guide Melanotan-1 research guide MT-1 selectively activates MC1R on melanocytes, turning on the cAMP/PKA/MITF cascade that drives eumelanin biosynthesis independently of UV… Read the guide →

Research guide Melanotan-2 research guide MT-2 binds all four melanocortin receptors, triggering melanin production in the skin and activating appetite and arousal circuits in the… Read the guide →

Research guide SNAP-8 research guide SNAP-8 mimics an extended SNAP-25 fragment, blocking SNARE complex assembly more effectively than Argireline and gently reducing the muscle… Read the guide →

Compare Compare GHK-Cu and BPC-157 GHK-Cu vs BPC-157: mechanism, receptor profile and specifications side by side. Compare →

Analytical evidence View the GHK-Cu COA Current batch purity and identity testing, 2026-06-26. View the COA →

Analytical evidence View the Melanotan-2 COA Current batch purity and identity testing, 2026-04-28. View the COA →

Frequently asked questions

What is GHK-Cu studied for?

GHK-Cu is a naturally occurring copper-binding tripeptide studied in dermatological research for its role in collagen and extracellular-matrix synthesis, wound-healing signalling and skin remodelling. New-U supplies it for laboratory research use only.

What are the melanocortin peptides in this area?

Melanotan-1 and Melanotan-2 are synthetic analogues of alpha-melanocyte-stimulating hormone studied for their effect on melanogenesis (pigment production) in research models.

How is purity verified?

Released batches are analysed by independent laboratories (Janoshik Analytical and Freedom Diagnostics) by RP-HPLC for purity and mass spectrometry for identity. Every released sale batch must pass independent verification before it is offered for sale. Published Certificates of Analysis are listed per compound at /coa. In this area, 2 of the 5 compounds have a current published certificate.

Scientific sources & further reading

GHK-Cu - Wikipedia

Afamelanotide (Melanotan-1) - Wikipedia

Melanotan II - Wikipedia

Research use only - all claims made on this site are for testing and research use only. This page summarises published research context and does not constitute medical advice or dosing guidance.

PRECISION. PURITY. PERFORMANCE.

Research peptides at >99% HPLC-verified purity, third-party tested by Janoshik Analytical & Freedom Diagnostics, with Certificates of Analysis published per released batch. Supplied strictly for laboratory research use.

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