Tag: Hair structure

Did you know that approximately 90% of a human hair's total mass is composed of proteins? The specific, tough, fibrous protein that gives skin, hair, and nails their hardness is called keratin.

While commonly stated that hair is up to 90% protein, multiple scientific sources reveal the actual percentage can be even higher, with many citing figures of 95% or more. This protein, known as keratin, is the primary structural material that gives human hair its strength and resilience.