Wyoming State Board Cosmetology Practice Exam

An ammonium sulfate relaxer is classified as Low pH or no lye because it does not contain lye and has a lower pH compared to other relaxers. Option A is incorrect because it states "High pH" which would mean the relaxer contains a high amount of lye. Option C is incorrect because it states "Medium pH" which is not specific enough to classify the relaxer. Option D is incorrect because it states "High lye" which would mean the relaxer contains a high amount of lye. Therefore, the correct answer is B.