The hard protein that hair is made from is called keratin.
The protein found in hair is called keratin, which is a strong fibrous protein.
keratin
Keratin
Keratin.
keratin
keratin
Your hair is composed of the protein keratin, which is the same protein that makes up fingernails, feathers, claws and hooves.
Keratin is the structural protein for hair and nails (also horns in animals).
keratine
Carateen
Yes it does because it contains protein. There are some gel that is soft such as softee and other brands that will not make your hair hard but still contain protein.