Write the editor.

What to write about

The most useful messages flag specific errors: a misattributed citation, a wrong year, a DOI that no longer resolves, a paper we missed that adds materially to the file. We also welcome notes on new 2024 or 2025 publications worth adding, and on regulatory changes (FDA status, WADA listings, jurisdiction-specific cosmetic-ingredient updates) that would change the framing on /about or /faq.

We cannot answer questions about whether to use GHK-Cu, what dose to take, where to obtain it, or whether a particular product is genuine. Those questions belong to a clinician or, for cosmetic products, to a dermatologist familiar with the relevant formulation.

How to reach us

The contact form on this page collects your name, email, message subject, and a short message. Submissions go to the editorial inbox; we read them, but we do not guarantee a personal reply to every message. If your note is a citation correction or a clear factual error, we try to update the archive within a few days and may credit the correction in the entry's revision history.

A note on scope

This site covers GHK-Cu specifically — the glycyl-L-histidyl-L-lysine copper(II) complex — and nothing else. We do not publish on related compounds (AHK-Cu, palmitoylated tripeptides, sister copper peptides) beyond brief comparative mentions where the GHK-Cu literature touches them. We do not host clinical advice, treatment protocols, or product reviews. The archive is editorial commentary on publicly available science, full stop.

Privacy and data handling

Your name and email are used only to read and respond to your message; they are not added to any mailing list, not shared with any third party, and not sold under any circumstance. We do not run third-party marketing analytics on the contact form. If you write to us about a citation correction and we incorporate the change into the archive, we do not name you in the revision history unless you ask us to.