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Even in people without overt deficiency, B12 injections can correct subclinical insufficiency more rapidly than oral supplementation
GHK-Cu topical: 1 %3 % for skin, 0.5 % for scalp AHK-Cu topical: 0.05 %0.1 % is standard in most hair serums - note this is much lower than GHK-Cu percentages Injectable AHK-Cu: less well characterised
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Ismail, David W
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