Final answer:
Hydroxide relaxers are not compatible with thio relaxers, permanent waves, or soft curl perms due to different chemical reactions and potential for undesirable results.
Step-by-step explanation:
Hydroxide relaxers are not compatible with thio relaxers, permanent waves, or soft curl perms because they have different chemical reactions and can lead to undesirable results.
Hydroxide relaxers work by breaking disulfide bonds in the hair, which results in straightening. Thio relaxers and perms, on the other hand, rely on disrupting and reforming disulfide bonds to create curls or waves. The use of hydroxide relaxers on hair that has been treated with thio relaxers or perms can lead to overprocessing, breakage, or uneven results.