What types of hair are typically more resistant to relaxers?

Thick and coarse hair is typically more resistant to relaxers due to its structural characteristics. This type of hair has a larger diameter and often a more complex curl pattern, which can make it tougher and more resilient against chemical processing. The density of thick hair means there are more layers of cuticle that need to be penetrated for the relaxer to effectively alter the hair’s texture. Coarse hair also tends to have a stronger natural wave or curl, requiring more intensive chemical action from the relaxer to achieve a straightened effect.

In contrast, fine and limp hair is generally more susceptible to chemical treatments because of its smaller diameter and finer cuticle layers, allowing the relaxer to penetrate more easily. Medium and straight hair may tolerate relaxers well but does not present the same level of resistance. Curly and wavy hair can be resistant, but it largely depends on the hair's thickness and porosity rather than just its curl pattern. Thus, thick and coarse hair stands out as the most resistant type when it comes to relaxers.