Quick Answer: While extremely high doses of glutathione used for skin lightening might theoretically influence hair pigment, standard wellness supplementation is more likely to protect hair color
[DOI] [PMC free article] [PubMed] [Google Scholar] 106.Pham D.L., Ban G.Y., Kim S.H., Shin Y.S., Ye Y.M., Chwae Y.J., Park H.S
Symptoms of a Herxheimer reaction include a sudden, intense exacerbation of baseline symptoms: severe brain fog, debilitating fatigue, migrating joint pain, flu-like body aches, headaches, and heightened anxiety
Body Weight A general guideline suggests taking 20-40 mg of glutathione per kilogram of body weight
Nutrients , 12 (3), 848
GHK-Cu Research# GHK-Cu research spans both laboratory and limited human studies: Wound healing : Accelerated wound closure in animal models and small human studies Skin rejuvenation : Human studies demonstrating improved skin thickness, elasticity, and collagen density with topical application Hair growth : Studies showing increased hair follicle size and proliferation Gene modulation : Comprehensive genomic studies mapping its effects on ~4,000 genes Anti-fibrotic effects : Research suggesting reduction of scar tissue formation GHK-Cu benefits from some human data in dermatological applications and a longer history of commercial use, though large-scale clinical trials remain limited