Hair keratin treatment is one of the most popular salon procedures for reducing frizz, improving shine, and making hair more manageable. Many people consider it as an alternative to traditional hair straightening treatments, but a common question remains: does keratin treatment actually straighten hair? The short answer is yes—but only partially. Keratin treatment can make hair appear smoother and straighter, but it is not a permanent straightening method like chemical rebonding or hair relaxers. Its main purpose is to reduce frizz and improve texture rather than completely change the natural hair structure.