Melanin biology = weeks to months Dose well below studied ranges (e.g., under 250mg) minimal supporting research at very low doses No ALA or NAC in formula these co-factors are commonly included to support glutathione regeneration, though not strictly mandatory No FSSAI number on label illegal in India Prices below 300/month raw material cost makes this difficult at consistent quality Clinical Research: What Studies Actually Show Rather than relying on marketing claims, here's a brief summary of the published research most relevant to oral glutathione and skin brightening: Oral glutathione and skin pigmentation Arjinpathana & Asawanonda (2012), Journal of Dermatological Treatment , found that subjects taking 500mg/day oral glutathione for 4 weeks showed a significant reduction in melanin index compared to placebo in a double-blind randomised trial

This antioxidant helps me a lot with pigmentation - especially if you add niacinamide and use them both at the same time, even if this mix is not the best for sensitive skin
Growth-Modulating Effects of Human Serum Albumin-Copper Complex
Does GHK-Cu actually grow hair or just protect against loss
Add the antioxidant support: Take your glutathione and Vitamin C at the same time
Product Specifications Glutathione, an important antioxidant and detoxifying agent in your tissues, is manufactured from three amino acids: glutamic acid, cysteine and glycine