FEBS Lett (2001) 488:8590
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Some research has suggested potential mechanisms by which severe nutritional deficiencies might theoretically affect hair pigmentation, including: Oxidative stress affecting melanocyte function Impaired cellular metabolism within hair follicles Disrupted synthesis of compounds necessary for melanin production A small number of case reports have documented instances where correcting severe B12 deficiency appeared to coincide with some hair colour restoration, though these remain anecdotal and do not establish causality or predict reversibility
In the UK, these medications are commonly prescribed for type 2 diabetes and, more recently, for chronic weight management

Topicals (proven brighteners) Vitamin C serum in the morning Niacinamide for tone and barrier Retinoid at night (started cautiously) Targeted pigmentation actives (alpha arbutin, tranexamic acid, kojic acid, azelaic acid) where indicated Hydroquinone in a planned, cycled course for melasma where appropriate, under supervision In-clinic A planned course of chemical peels (mandelic, glycolic, salicylic depending on skin type) For melasma specifically, sometimes specialty lasers or microneedling-RF in selected cases Lifestyle Sleep, hydration, antioxidants in diet Iron and vitamin D corrected if deficient Stop the at-home over-acid-stacking that brings most patients to dull, sensitised skin in the first place And, optionally glutathione If, after a foundation is in place, a patient still wants to try IV glutathione, we discuss honestly: Pharmaceutical-grade product, sourced and stored properly Medical supervision

Buy IGF-1 LR3 Research Protein IGF-1 LR3 is supplied as a lyophilised powder, independently HPLC and MS-UPLC tested to 98% purity