Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Set Your skincare isn't working. But your hair is the real signal. If you're noticing thinning, shedding, or less density it's not random. And it's not just genetics. Meet GHK Cu (copper peptide): GHK Biotin Peptide Serum Organic Anti Aging & Hair Growth Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. Co delivery of bioactive peptides by nanoliposomes for promotion of hair growth ScienceDirect