Vitamin A is an essential vitamin to help you with hair loss and thinning hair. However, be sure to not take more than 25,000 IU daily as it could lead to more hair loss or other severe problems.

Vitamin C and E are two antioxidants vitamins that are important for keeping your hair, looking fuller and shinier, and scalp healthy.

Vitamin B2, also known as riboflavin, deficiencies are associated with an increased production of sebum (oil produced by the hair follicles). However, too much B2 and increased sebum production may result in reduced strength of the hair shaft.

While it is always best to eat foods high in such vitamins as your primary source of such nutrients, it can be difficult in today's fast paced world. Fortunately, supplementing your diet with vitamins for hair loss can be quite effective.

However, nutritional supplements cannot be taken haphazardly. These are serious substances and should be used with the advice of an expert and approved by your health care professional. In fact, if not used correctly, supplements can have a negative effect. For example, excessive Vitamin A supplementation can actually contribute to hair loss. Choose your vitamins for hair loss carefully and use them correctly, in the right amounts.

Biotin

Biotin often called vitamin H, is yet another B complex component. Biotin is a proven hair growth vitamin and a preventative to excessive hair loss. It appears to metabolise fatty acids. Fatty acids are a valuable growth factor in numerous processes in the body including the hair. Biotin is also seen as an aid in preventing hair turning grey.

Biotin is found in egg yolks. Raw egg whites actually hinder effectiveness, but when the albumen (egg white) is cooked, the culprit - a substance called avidin is destroyed by heat. Biotin is also present in liver, milk, yeast and kidney.

Balding men might find that a Biotin supplement may keep their hair longer.

Zinc

In laboratory tests animals fed with a zinc supplement showed signs of more hair growth, as opposed to loss of hair in animals that were deprived of zinc in their feed. It was discovered that there was a change in the hair protein structure when zinc was deficient in the diet.

Severe zinc deficiency in humans has been shown to produce baldness and scalp problems that were reversed when zinc was returned to the diet.

Zinc has also been shown to stop hair turning grey. One doctor taking zinc for a year reversed the grey hairs which returned to their original colour.

What Else?

Other vitamins are important to the growth and maintenance of hair. These vitamins include zinc, iron, vitamin C, and copper. If you do not receive an adequate amount of these vitamins, make sure to look for food sources or begin taking supplements.

High doses of Vitamin A can also result in the temporary loss of hair.

Iron deficiency can be another cause of hair loss. Young women often have low iron due to the changes in their bodies and their menstrual cycle. Some people do not consume enough iron in their diets or have an inability to properly absorb iron. A doctor can test your blood for iron levels and can treat this by recommending iron pills as part of your vitamin and mineral regiment.