Which product is typically used to balance skin pH after cleansing?

The correct choice is toner, as it is specifically formulated to restore the skin's pH balance after cleansing. Cleansing products, whether they are gels, milks, or foams, can disrupt the natural acidity of the skin, leading to dryness and irritation. Toners help to reestablish the ideal pH, which is typically slightly acidic, thus preparing the skin for subsequent skincare steps such as serum or moisturizer application.

While moisturizers are designed to hydrate the skin, they do not address pH levels directly. Exfoliators serve to remove dead skin cells and may contain acids or scrubs, but they are not intended for pH balancing. Serums are concentrated treatments that target specific concerns, but they also do not serve the role of recalibrating pH. This makes toner the most appropriate product for restoring balance after the cleansing process.