Which type of hair is most at risk for damage and breakage?

Chemically treated hair is most at risk for damage and breakage due to the chemical processes it undergoes, such as coloring, perming, or relaxing. These treatments alter the hair's structure, leading to weakened cuticles and cortex, which makes the hair more vulnerable to environmental stressors and physical manipulation. The chemical bonds that give hair its strength are often broken or altered during these processes, resulting in reduced elasticity and increased porosity.

In comparison, while other hair types—like curly or straight hair—may have their own challenges, their natural state is generally more resilient. Natural hair can maintain its integrity better because it hasn't been subjected to the harsher effects of chemicals. Curly hair, though it can be prone to dryness and frizz, doesn't inherently have the chemical damage associated with treatment. Straight hair can also be healthy and strong when well cared for, but it is the chemically treated hair that faces the most significant risk due to ongoing exposure to potentially damaging agents.