How often should a clarifying shampoo be used before a perm?

Using a clarifying shampoo as needed based on hair condition is important before a perm because it ensures that the hair is free from buildup, products, and oils that can interfere with the perming process. The purpose of a clarifying shampoo is to deeply cleanse the hair, removing residual styling products, oils, and dirt that can impact the perm's effectiveness. If the hair contains excess buildup, the perm may not hold properly or may produce uneven results.

Using clarifying shampoo in this way allows for flexibility. If the hair is clean and free from buildup, there may be no need to use it before every perm. On the other hand, if someone frequently styles their hair or uses a lot of products, it may be necessary to use clarifying shampoo more frequently. Therefore, assessing the condition of the hair and using a clarifying shampoo as needed is the best approach to prepare the hair for perming.