Sodium hydroxide relaxers are generally suited for which type of hair?

Sodium hydroxide relaxers are designed to effectively alter the structure of overly curly hair, making them the most suitable choice for this hair type. This is due to their potency in breaking down the bonds in very curly or coily hair, a process that allows the hair to be straightened. The strong chemical composition of sodium hydroxide is capable of safely penetrating the hair shaft, facilitating a significant change in texture that is particularly necessary for tightly curled hair types.

For straight hair, there is no need for relaxation, as this hair type does not exhibit tight curls that require loosening. Wavy hair may not need the strong action of a sodium hydroxide relaxer since it typically has a more manageable texture that can often be styled without chemical alterations. Thin hair could be adversely affected by the harsh chemicals in sodium hydroxide relaxers, as they may weaken the hair shaft further, leading to damage and breakage. Therefore, the correct answer highlights the ideal candidates for sodium hydroxide relaxers, focusing specifically on those with overly curly hair who seek to achieve a straighter look.