Too much protein in hair refers to an excessive buildup of protein molecules on hair strands. A common example is keratin overload, where keratin treatments or excessive use of protein-rich hair care products lead to brittle, over-processed hair.
Protein is crucial for healthy hair, providing strength and elasticity. However, an imbalance can lead to hair damage. The advent of protein-based hair treatments in the late 20th century has brought attention to this issue.