7 days on GHK Cu. Here's my honest update. I'm not going to hype this up because the real results don't even start until week 46. But something is already happening. Polaris Peptides: GHK Cu tests and rating Finnrick Product Testing & Supply Chain Transparency GHK Cu by HK Peptides Test Certificate Finnrick Analytics 7 days on GHK Cu. Here's my honest update. I'm not going to hype this up because the real results don't even start until week 46. But something is already happening. Cashmere (Caffeine GHK Cu Tretinoin w Niacinamide) Strive Pharmacy