liquid ghk cu GHK-CU ACETATE Topical Foam Compounded and daily anti GHK-Cu Copper Peptide Serum 1%
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It wont tell you what amount to use

Annu Rev Biochem 77(1):615641

(3) Heffernan MA, Jiang WJ, Thorburn AW, Ng FM

Melatonin Physiology Seasonal Rhythms A truly distinct physiological role for melatonin was initially indicated by the fact that pinealectomy or ganglionectomy (which abolished the rhythm of circulating melatonin) abolished the ability of photoperiodic mammals to time seasonal physiology according to the day length (with very rare exceptions) (39, 40)

Yes when properly defined
