B Vitamins

• The B vitamins are the most important vitamins to take to maximize the growth potential of your hair. The B vitamin family includes folic acid, biotin, inositol and minerals like zinc that help to encourage vigorous hair growth. B5 contains niacin and pantothenic acid, which are also building blocks for hair growth. According to the website Holisitc Online, when lab rats were denied niacin and pantothenic acid, they lost much of their hair.
  
  

Essential Fatty Acids

• Other vitamins that help to promote hair growth are the essential fatty acids. Essential fatty acids are substances that the body needs for chemical processes, but cannot make itself. The most common source for essential fatty acids is in fish like salmon. However, other common sources for essential fatty acids are in plant sources like flax and primrose.
  
  

Beta Carotene

• Beta Carotene, otherwise known as vitamin A, when taken in correct amounts can help to promote healthy hair growth and support thyroid function, which also supports healthy hair growth. However, in the case of vitamin A, too much of it can cause an adverse reaction. Studies have shown that taking too much vitamin A can cause hair to fall out.
  
  

Vitamin C

• The root of each hair has a blood vessel deep inside of it. As we age and our circulation decreases, the lack of blood flow to the scalp can lead to shrinking of hair follicles in the scalp and hair loss. Taking vitamin C and supplements like gingko biloba can help to promote healthy circulation to the scalp to encourage hair growth and prevent hair loss.
  
  

Vitamin E

• Vitamin E is another vitamin that increases circulation. Taking vitamin E encourages the flow of oxygen to the blood, which plays a factor in increasing circulation. Vitamin E also enhances immunity, which prevents stress from illnesses. The stress from illness can cause hair to fall out up to three months after the illness has passed. The hair lost form a stress-borne illness may not grow back again for another three months.