Minnesota Barber State Practice Exam

This is because permanent waving products of mild strength are perfect for those who have recently tinted their hair. The mild products are gentle enough to not cause further damage to the hair, while still providing a lasting wave. Untreated hair may benefit from stronger products, as it has not gone through any chemical processes. Grey hair may also require stronger products to achieve a desired result. Damaged hair may be too fragile for any type of permanent waving products, and may need to be treated and repaired before attempting any chemical treatments. Therefore, the correct answer is B, tinted hair.