Vermont Barbers and Cosmetologists Practice Exam

The correct choice highlights keratin treatments and chemical relaxers as the primary methods used in hair straightening. These processes fundamentally alter the hair's structure to achieve a smoother and straighter appearance.

Keratin treatments involve the application of a keratin protein solution to the hair, followed by heat styling to lock in the treatment, resulting in reduced frizz and enhanced shine. On the other hand, chemical relaxers work by breaking and reforming the bonds in the hair's cortex. This process effectively loosens the natural curl pattern, making the hair straighter. Both methods can last several weeks to months, depending on the technique used and the individual's hair type.

The other options are related to hair maintenance and styling but do not chemically alter the hair's structure. Hair coloring changes the pigmentation of the hair but does not affect its curl pattern or smoothness, steam treatments can hydrate and condition the hair but do not contribute to straightening, and blow drying with high heat can help straighten hair temporarily but does not chemically alter the hair's natural state. Thus, the focus on keratin treatments and chemical relaxers specifically addresses the chemical processes involved in effectively straightening hair.