True or False: It's important to know if clients have used natural treatments for proper shampoo selection.

Understanding a client's history with natural treatments is crucial for proper shampoo selection because these treatments can significantly impact the hair and scalp's condition. Natural treatments often involve oils, herbs, or other organic substances that can alter the structure or texture of hair. For instance, if a client has been using a heavy oil treatment, they may need a clarifying shampoo to ensure that buildup is removed effectively. Conversely, if they have used a conditioning treatment rich in herbal extracts, a gentle, sulfate-free shampoo might be more appropriate to maintain the benefits of those natural ingredients.

This knowledge helps stylists choose products that work harmoniously with the client's hair type and previous treatments, ensuring the best possible cleansing without stripping hair of essential nutrients or causing adverse reactions.

The other options do not encompass the broader implication of how various treatments can affect all hair types, not just colored or oily hair, highlighting the importance of assessing all clients' treatment histories, regardless of their specific circumstances.