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ghk-cu copper peptide hair regrowth evidence peptides growth study clinical studies GHK Trial (2016) — Research Summary Eugia US Cu Hair Serum AHK-Cu + GHK-Cu Hair Size:50mg – Select Quantity:2 Bottles first trimester https://www.frontiersin.org/files/Articles/504414/xml-images/fcell-08-00055-g001.webp Seaweed Bioferment is added to the serum to replace silicone to give hair a soft feel and protection

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