Vitamin A – sometimes called beta carotene because the body converts this substance into it – helps hair in a couple ways. For one thing, it promotes the secretion of sebum by glands in the scalp. This oil is what keeps your hair from becoming dry and brittle. In fact, if your hair is limp, chances are you need more vitamin A in your life.
There is a direct connection between hair loss and zinc deficiency, which is why top hair supplements add it to their ingredient list. Without enough zinc in your diet, you might find you lose more than a few strands of hair, too. Low zinc levels can cause your eyebrows to thin and your eyelashes to come out, as well. When you combine a comprehensive hair and nail supplement with a protein-rich diet, you have a strategy that promises to leave you with a beautiful head of hair.