Vitamin B and healthy hair:
The vitamins that are considered to be the best for hair growth are amino acids and vitamin B complex. Their supplements are easy to swallow and have beautiful effects. The intake of vitamins like vitamin B6, biotin, inositol and folic acid not only improves hair growth but also cause a general improvement in the health of one’s hair. The specific vitamins important for hair growth are vitamin B5 (pantothenic acid) and B3 (niacin).this was concluded by means of an observation Where rats were fed on foods rich in vitamin B and there lost hair got completely restored.Heavy intake of vitamin supplements, in some cases, has resulted in stimulating hair growth. Men deficient in vitamin B6 often lose their hair. When they are lacking in folic acid, some men became completely bald! As in case of animals, when normal intake of these vitamins is restored, the hair also returns in most instances.

Vitamin A and healthy hair:
It is a well known fact that vitamin A is essential for a proper vision during night and that its deficiency causes nightblindness. But what is to be observed here is that a deficiency of vitamin A in the body also causes flakiness of scalp. But trying to overcome the efficiency may lead to an itchy and embarrassing situation. A heavy intake of vitamin A for a long period of time can result in hair loss, but the problem reverses when the intake of vitamin A is stopped.

Apart from vitamin B complex and vitamin A, essential fatty acids also contribute in improving hair texture.  Requirements from a hair vitamin supplement: 

An ideal hair vitamin supplement is expected to stop hair loss, reactivate dormant and damaged hair follicles, promote healthy new hair re-growth and also speed up the growth of the existing hair. Thus it is well established that proper intake of vitamin B complex and vitamin C along with essential fatty acids leads to healthier and stronger hair.