What is a primary purpose of the tone in a facial cleansing routine?

The primary purpose of incorporating a toner into a facial cleansing routine is to balance the skin's pH. After cleansing, the skin may become temporarily more alkaline due to the ingredients in some facial cleansers, especially if they contain detergents or surfactants. A toner, typically formulated with a more acidic pH, helps to restore the skin’s natural pH level, which is important for maintaining its protective barrier and overall health.

Additionally, when the skin’s pH is balanced, it can function more effectively, potentially minimizing issues like excess oil production or dryness, and enhancing the absorption of subsequent products used in the skincare routine, such as serums and moisturizers. Thus, a toner plays a crucial role in preparing the skin for the next steps in a skincare regimen by ensuring it is in optimal condition.