Journal
Straight answers about copper peptides, labels and certificates, and how this stuff is regulated in New Zealand.
GHK vs AHK: what's actually differentGHK-Cu and AHK-Cu differ by a single amino acid. Here's what that changes, what it doesn't, and how to choose between them.How to read a certificate of analysisA line-by-line guide to a peptide certificate of analysis: what each test means, what good results look like, and the signs a COA can't be trusted.