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A: For US-based researchers, American Peptide Research is a commonly used source: Track Your GHK-Cu Protocol GHK-Cu's benefits accumulate over weeks and cycles
Regulatory Peptides , 160 (1-3), 2632
They should avoid strenuous exercise for 24 hours
IMPORTANT TIPS: FOR COSMETIC TOPICAL USE ONLY STORE AT ROOM TEMPERATURE - DO NOT REFRIGERATE AVOID MIXING INTO: --- Vitamin C products (the blend may become unstable) --- Hydroxy Acids (GHK is fragile and may break down) --- 3% VIP Luxury Products (these already contain a high concentration of GHK) --- Sunscreens (zinc oxide products, etc) All other cosmetic ingredients will work well - Product must be diluted (or blended into another product) before use
1989 Feb 27;481(1):165-8
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