Supporting DAO function is foundational: Vitamin C: 4001000 mg/day Vitamin B6: 3050 mg/day (as P5P ideally) Zinc: 3050 mg/day Copper: low-dose if deficient (relevant for GHK-Cu users especially) Quercetin: 5001000 mg/day acts as a mast cell stabilizer, directly reduces degranulation Genetics: Some People Are Structurally Predisposed Certain SNPs significantly impair histamine clearance this isnt a lifestyle issue, its a wiring issue: DAO variants (rs10156191, rs1049793): Reduce diamine oxidase enzyme activity and alter DAO protein structure, directly compromising the capacity to break down dietary and extracellular histamine HNMT variants (rs1050891, rs11558538): The Thr105Ile variant (rs11558538) reduces HNMT enzyme activity by approximately 50%, cutting intracellular histamine metabolism in half People carrying variants in both pathways face compounded clearance deficits

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It then works directly on the products from Phase 1 detoxification to make them water soluble for excretion by the kidneys
Still, it helps to keep the treatment in perspective
To keep the skin tight and robust, support collagen levels with a combination of skincare, supplements, nutrition, and sun protection