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The substrates include monoamines such as dopamine (DA), serotonin, norepinephrine and other neurotransmitters like GABA, amino acids or amino acid-like molecules such as glycine, creatine, and taurine

GHK-Cu operates upstream: it modulates the gene expression networks that regulate collagen synthesis, breakdown, and organization

Research indicates that these botanicals, antioxidants, vitamins, and amino acids can also improve sleep quality and provide neuroprotection as you age

Therefore, using products containing GHK-CU is an effective way to address various skin concerns

Additional studies have investigated its effects on melatonin secretion and circadian rhythm regulation through the pineal gland