Barber Practice State Board Practice Exam

Alkalis are known to _______ and _________ hair.

1. Dry and break

2. Color and curl

3. Soften and swell

4. Strengthen and thicken

The correct answer is: Soften and swell

Alkalis are known to soften and swell hair due to their chemical properties. When applied to the hair, alkalis break down the disulfide bonds within the hair structure, facilitating changes in the hair's texture and shape. This process is essential in various hair treatments, such as chemical relaxers and perms, where the goal is to alter the hair’s natural state. The swelling effect that alkalis induce allows for better penetration of other chemicals used in hair treatments, leading to more effective results. Therefore, understanding the properties of alkalis is crucial for barbers and cosmetologists when performing specific hair services and ensuring the hair remains healthy and manageable.