An exfoliant removes dead skin cells from the surface of your skin. It helps to unclog pores, improve skin texture, and promote cell turnover. A toner, on the other hand, is used to balance the skin's pH levels after cleansing and it is usually more hydrating than an exfoliant. It helps to remove any remaining traces of makeup, dirt, or cleanser while also prepping the skin to absorb the products that follow in your skincare routine. In your skincare routine, you would use the Hyaluronic Acid Tonerfirst, then use the BHA/AHA Exfoliant.