NOCTI Cosmetology Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

When curling hair, it is essential to avoid curling wet hair because the moisture content in damp hair can cause the heat from curling tools to create steam. This steam can lead to excessive heat exposure, resulting in damage to the hair cuticle and structure. Curling wet hair often results in a lack of effective curl formation, and the intense heat combined with moisture can weaken the hair, leading to split ends, breakage, and overall compromised hair health.

Other factors, such as the types of products used, the quality of the curling tools, and brushing techniques also play a role in hair health, but curling hair while wet is particularly detrimental due to the specific combination of moisture and heat. Properly drying hair before applying heat not only enhances the effectiveness of the curling process but also helps maintain the integrity of the hair.