b12 injections for hair growth Vitamin Before and After Biotin Hairgrowth Shots - #1
Description
For those looking to enhance the benefits further, Lipo+ is also available in combo with B12 Methylcobalamin

And yes, you are right

Adrian S, Scherzinger A, Sanyal A, Lake JE, Falutz J, Dub MP, Stanley T, Grinspoon S, Mamputu JC, Marsolais C, Brown TT, Erlandson KM

Int J Epidemiol 47:1314g
