One Women's Health writer increased her protein intake and saw major hair changes. Here, a dermatologist and registered dietitian explain what's behind her transformation.

The textile and meat-processing industries produce billions of tons of waste annually in the form of feathers, wool and hair, all of which are rich in keratin—the strong, fibrous protein found in hair ...

Keratin is the fibrous, waterproof protein that builds everything from our hair and nails to a rhino's horn. However, a tiny glitch in it can have problematic outcomes. A new study has found that ...

If your hair is shedding, thinning or breaking more easily lately, the problem could be hiding in your diet. Protein has gone mainstream, showing up in everything from popcorn to pancake mix to coffee ...

Turns out, the key to lusher locks was through my stomach ...