It's important to select a shampoo formulated for your specific hair type. For example, if you have oily hair, opt for a clarifying or volumizing shampoo, while those with dry hair should choose moisturizing or hydrating shampoos.

Sulfate-free shampoos do not contain harsh sulfates like sodium lauryl sulfate (SLS). They are a good choice for people with sensitive skin or those looking to avoid sulfates, which can be drying. However, they may not lather as much as traditional shampoos.

Salon shampoos are often formulated with higher-quality ingredients and may be more concentrated, but over-the-counter shampoos can be effective for most people's daily hair care needs. The choice depends on your specific hair concerns and budget.