Delaware Cosmetology and Barbering Practice Exam

The two main types of relaxers used in hair treatment are sodium hydroxide and ammonium thioglycolate. Sodium hydroxide is an alkaline chemical that permanently straightens hair by breaking down the hair's protein structure. It is known for its strength and effectiveness in altering the natural curl pattern of the hair. Ammonium thioglycolate, commonly referred to as "soft" relaxer, is a milder alternative that can also straighten the hair but does so in a way that allows for a certain degree of flexibility in styling and does not cause as much damage compared to sodium hydroxide.

Understanding the difference between these two types of relaxers is crucial for hair professionals. Sodium hydroxide works best on coarse, resistant hair, while ammonium thioglycolate is better for finer hair textures. Proper use and application are essential to achieving the desired results while maintaining hair health.

The other options refer to different classifications or characteristics that do not specifically identify the main types of relaxers. For instance, cream and gel refer to the physical forms in which relaxers might be sold, while natural and synthetic highlight the source of ingredients rather than types of relaxers. Hydroxide and potassium are not specific categories recognized in the context of relaxer