Biotin

The next best supplement to take to achieve long healthy hair is biotin. Biotin is a B vitamin that helps with your metabolism. It also has the ability to thicken your hair which makes your hair stronger and less prone to breakage. Biotin can be found in foods like eggs, especially the yolk, and brewer's yeast. Taking a biotin supplement in addition to eating these foods will allow you to see a change in your hair quicker.