Your scalp collects more than just oil. Styling products, dry shampoo, hard water minerals, pollution, and even excess sebum can build up over time. If there's a layer of buildup on your scalp and hair, it can prevent your products from working as effectively by making it harder for beneficial ingredients to reach where they're needed most.
A clarifying shampoo is designed to remove what your everyday shampoo can leave behind, creating a cleaner environment for healthy-looking hair.
The takeaway: A clean scalp is the foundation of healthy hair.