"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Keratin shampoos work by supplementing your hair's natural keratin proteins and repairing bonds along the ...

New research from the Johns Hopkins Bloomberg School of Public Health suggests that the protein keratin 17 - the presence of which is used in the lab to detect and stage various types of cancers - is ...

When our hair is in desperate need of some TLC, our natural instinct is to reach for the deepest and most nourishing protein treatment to soak our strands in, say a quick prayer to the beauty gods, ...