Hair is primarily composed of a protein called keratin. Keratin is a fibrous protein that is also found in skin, nails, and internal organs. It provides strength and structure to these tissues. Human hair is made up of over 90% keratin.
Keratin is made up of amino acids linked together in long chains. These chains are then folded and arranged into a complex structure that gives hair its strength, flexibility, and elasticity.
Keratin can be damaged by factors like heat styling, chemical treatments, and environmental exposure. This damage can lead to hair that is dry, brittle, and prone to breakage. Protein treatments can help to repair damaged keratin and improve the overall health of hair.
