Which relaxers contain two components and must be mixed immediately prior to use?

Guanidine hydroxide relaxers are indeed two-component systems that require mixing immediately before application. This is essential because the two components, usually a base and an activator, work together to create a chemical reaction that allows the relaxer to effectively break down the disulfide bonds in the hair. By combining these components just prior to use, the stylist ensures that the relaxer is at its peak potency, which maximizes its effectiveness and ensures a more uniform result.

In contrast, other types of relaxers, such as sodium hydroxide relaxers, are typically sold as single-step products that do not require mixing. Calcium hydroxide relaxers, while they may involve some mixing, do not necessarily involve a two-component system like guanidine hydroxide relaxers. Metal relaxers are generally outdated and are not in common use today; they do not rely on a two-part mixing approach either. Understanding these differences is crucial for proper application and safety in hair design practice.