Toners are liquid skincare products used after cleansing the face. They help remove any remaining dirt, oil, or makeup, preparing the skin for further treatments. Toners can also help balance the skin's pH levels and may contain ingredients like witch hazel or aloe vera for added benefits. There are different types of toners, including hydrating, exfoliating, and astringent formulas. Hydrating toners provide moisture, while exfoliating toners contain acids to remove dead skin cells. Astringent toners are often used for oily skin, as they help tighten pores and reduce excess oil.