nih ghk-cu Copper Peptide (GHK-Cu) Facial Cream
Description
Jutkiewicz EM, Kaminsky ST, Rice KC, Traynor JR, Woods JH: Differential behavioral tolerance to the delta-opioid agonist snc80 ([(+)-4-[(alphar)-alpha-[(2s,5r)-2,5-dimethyl-4-(2-propenyl)-1-piperazinyl ]-(3-methoxyphenyl)methyl]-n, n-diethylbenzamide) in sprague-dawley rats

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Different stability and pH profiles can degrade the solution

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Science 242:580583

Be sure to follow with a good moisturizer
