B-Group vitamins, what, how, why?

B-Group vitamins, what, how, why?

Vitamin B has long been popular with people who want to have healthy, bright skin. However, you may not realize that there are eight different B vitamins, each of which has different effects. There are questions:
what advantage does vitamin B give to your skin,
what vitamins of group B are most useful
and how should you use them?
Understanding the Complex Vitamin B.