GHK-Cu (Glycine-Histidine-Lysine Copper Peptide) is a naturally occurring tripeptide-copper complex found in human plasma, saliva, and urine
Bradford MM (1976) A rapid and sensitive method for the quantitation of microgram quantities of protein utilising the principle of protein dye binding
Why You'll Love It: Enriched with Glutathione to brighten and renew
They can be more affordable than glutathione supplements or injections
That's the copper ion, and it's completely normal
Methods Animal preparation The animal care and experimental protocols conformed to the recommendations in the 8th Edition of the Guide for the Care and Use of Laboratory Animals of the National Institutes of Health (NIH, revised 2011) and were in accordance with the Animal Management Rules of China (Documentation 55, 2001, Ministry of Health, China)