Which hair type can handle a higher volume of hydrogen peroxide?

Coarse hair can handle a higher volume of hydrogen peroxide due to its thicker cuticle layer and larger diameter. The structure of coarse hair allows it to absorb more product and withstand stronger chemical treatments without being as adversely affected as finer hair types. The resilience of coarse hair makes it better suited for high-volume developers used in lightening or bleaching processes, which contain hydrogen peroxide.

Fine hair, on the other hand, has a more delicate structure and is more prone to damage when exposed to high volumes of chemicals. Medium and curly hair also have their own characteristics that can make them less capable of handling high volumes of hydrogen peroxide compared to coarse hair. For these reasons, coarse hair stands out as the most capable of withstanding the effects of higher concentrations of hydrogen peroxide.