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Description
Biotin (Vitamin B7): Functions: It maintains healthy hair, skin, and nails and is also considered a metabolite
Compound CID 950107. National Center for Biotechnology Information
Human data is still early but promising
Vitamin B12 deficiency can cause a pale or yellowish appearance to the skin

Your red blood cells, among other functions, transport oxygen to all of your bodys cells
Oral versus intramuscular administration of vitamin B12 for the treatment of patients with vitamin B12 deficiency: a pragmatic, randomised, multicentre, non-inferiority clinical trial undertaken in the primary healthcare setting (Project OB12)
