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Important Safety Information Pregnancy or breastfeeding (hard contraindication for estriol-containing formulas) Hormone-sensitive cancer history (ER-positive breast, endometrial) flags estriol formulas for provider review Known copper allergy (GHK-Cu formulas) Open wounds, broken skin, or active infection at application site Wilson's disease or other copper-handling disorder (flag for provider review) Current SSRI, SNRI, MAOI, or TCA therapy (flag for methylene blue cream review) Frequently asked questions about skin & hair peptides What do peptides do for skin
Impaired expression of glutathione peroxidase-4 gene in peripheral blood mononuclear cells: a biomarker of increased breast cancer risk
Q6: What are the main side effects of GHK-Cu
Combined with minoxidil, GHK-Cu produced nearly double the terminal hair growth (35% vs 18% monotherapy)
Archives of Biochemistry and Biophysics
