Luzzatto, L., Ally, M
It has these effects Beautiful skin Whitening Anti aging Anti allergy Recovery from fatigue Sleep disorder improvement Glutathione drip Glutathione drip contains glutathione, a powerful whitening ingredient, as its main ingredient, and has antioxidant and melanin suppressing effects
I touched on this briefly earlier, but its worth mentioning again
A 2016 study published in Nature Scientific Reports directly compared copper compounds and found that while copper chloride and copper acetate were highly cytotoxic, GHK-Cu showed no cytotoxicity across all tested concentrations and did not induce inflammatory markers

Indicated for improving health concerns associated with low progesterone levels in women, including premenstrual syndrome, irregular menstrual cycles, polycystic ovarian syndrome, peri-menopause, hyperprolactinemia, insomnia and infertility Provides a highly concentrated 10:1 extract of Vitex agnus-castus with vitamin C and a mixed tocopherol blend, sourced from GMO free rapeseed oil, to support healthy progesterone levels Pyridoxal-5-phosphate (P-5-P), the biologically active form of vitamin B6, is added for the efficient conversion of 5-HTP into serotonin and the production of other neurotransmitters Progesterone is primarily responsible for thickening the uterine lining in order to prepare the female body for implantation of a fertilized egg, but it plays many other roles