Before you choose shampoo, it’s important to know what shampoo does, how to use it, and how that relates to your hair and scalp type.
Shampoo is meant to clean your hair and scalp of dirt, oil, and styling products. While you might think of shampoo strictly as a hair-cleansing agent, it’s actually more important to consider your scalp when choosing a shampoo.
Think of it this way: Shampoo is for your scalp, and conditioner is for your hair. If your scalp is oily and your ends are dry (which is a common problem), then you should choose a shampoo that is best suited for an oily scalp, and a conditioner that’s formulated to hydrate your dry ends.