What is a common reason for hair breakage?

Hair breakage is often a result of a lack of moisture or over-processing from treatments. Both of these factors affect the hair's structural integrity. When hair is not adequately moisturized, it becomes dry and brittle, making it more susceptible to breakage. Furthermore, over-processing involves using chemical treatments—such as coloring, bleaching, or perming—too frequently or improperly, which can weaken the hair shaft and lead to damage. This weakening contributes to breakage because chemically treated hair can lose its elasticity and strength.

In contrast, while excessive use of styling tools, too much protein in hair products, and using the wrong shampoo can contribute to hair issues, they typically do not lead to breakage as directly or consistently as moisture depletion and over-processing do. For example, excessive heat styling can cause temporary dryness and frizz, but it is the lack of moisture or harsh chemical processes that fundamentally destabilize the hair structure, making it prone to breaking.