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B12 is a water-soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood

It contains a small amount of benzyl alcohol, which helps inhibit bacterial growth and allows the solution to be used multiple times when handled correctly

Because it can make fibroblasts produce new collagen, thereby promoting metabolism and collagen regeneration, and copper ions act on cells, and are also an important component of multi-enzyme reactions, helping the formation of glucopolyamine to achieve the effect of reducing fine lines

The World Anti-Doping Agency (WADA) has banned its use in sports7