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PSI Cosmetology Theory Exam Solved 100% Correct (Verified Answers)
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PSI Cosmetology Theory Exam Solved 100% Correct (Verified Answers) Straight Rods (Ans: - uniform circumference Alkaline Permanent (Ans: - softens and swell the hair which raises the cuticle. Developed in 1941 Ammonium Thioglycolate (ATG) (Ans: - main ingredient or reducing agent in alkalin...
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