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However, in this case the delivery vehicle is influential, as the stratum corneum functions as an effective aqueous barrier and prevents the passage of many substances [1]

This is important because better blood flow means your hair follicles get more oxygen and nutrients, which are essential components for healthy hair growth

doi: 10.1016/S0378-8741(03)00231-9

Synthetic B12 (cyanocobalamin) is less bioavailable by comparison and requires a three-step process to be converted to usable B12 in the body
