A recent article at Men’s Health discusses the kind of food that will keep your hair healthy. The article goes one further than just food, though, and offers the precise breakdown on the nutrients in that food that make it so good for you and your hair. Here’s what it says about protein:

You know you need adequate protein to build muscle—and you also need it for healthy hair because hair is made primarily of protein. Low-quality protein can lead to weak, brittle hair or a loss of hair color—but chances are, if you’re trying to add or maintain muscle, you already eat enough.

The article has a full breakdown to make sure you’re getting a wide range of nutrients to keep you looking good.