What is the function of a toner in a skincare regimen?

The function of a toner in a skincare regimen is primarily to balance the skin's pH levels and remove leftover residue after cleansing. Cleansing is an essential step to remove dirt, oil, and makeup from the surface of the skin; however, it can sometimes disturb the skin’s natural pH balance, which can lead to dryness or irritation. A toner helps restore this balance, making the skin feel refreshed and better prepared to absorb serums and moisturizers that follow. Additionally, toners can aid in removing any remaining impurities or product residue that might not have been fully eliminated during cleansing.

While hydrating properties can be found in some toners, they are not the primary function. Sun protection and exfoliation are also not the main purposes of a toner; instead, they are typically addressed by other specific products within a skincare routine, such as moisturizers with SPF or exfoliating acids. Therefore, the correct answer centers on the toner’s role in maintaining skin balance and ensuring thorough cleansing.