What is the primary cause of split ends?

Split ends, also known as trichoptilosis, occur when the hair shaft becomes weakened and splits, typically at the ends. The primary cause of split ends is a lack of moisture combined with excessive heat styling. When hair is deprived of moisture, it can become dry and brittle, making it more susceptible to damage. Heat styling tools, such as flat irons, curling irons, and blow dryers, can further exacerbate this problem by stripping the hair of its natural moisture and causing it to break down structurally. This combination of dehydration and high temperatures leads to the splitting of hair ends.

In addition, overuse of heat can create micro-damage over time, which accumulates and manifests as split ends, making it crucial for individuals to maintain proper hydration of their hair and to use heat styling tools judiciously. Regular conditioning and protective hair care practices can help mitigate these issues.