ghk-cu how much to take Neurogan Copper Peptide Hair & Scalp Serum – 2400mg, 4% Copper Peptides – Fast-Absorbing, Water-Based Formula for Hair Softness & Shine GHK-Cu Facial Serum | Empower
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10.1016/j.mehy.2015.09.018 125 Van SpaendonkH.CeuleersH.WittersL.PatteetE.JoossensJ.AugustynsK.et al (2017)
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Nature 468 , 557561 (2010)
After one month of treatment, 70 % of participants using a GHK-Cu cream showed increased collagen in their skin, compared to 50% of those using a vitamin C cream and only 40% of those using a retinoic acid (tretinoin) cream
