How to Administer an Intramuscular Injection at Home Copper Peptides for Hair Serum GHK Cu for Hair PLU Labs Not all hair serums are built the same This one is powered by a dual copper peptide system GHK Cu + AHK Cu Designed to support: stronger feeling hair improved elasticity Where science meets stronger hair. A lightweight serum powered by 10% GHK Cu & 5% AHK Cu, designed for visibly thicker roots and a resilient scalp barrier. Fuller, healthier looking hair begins here. [
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