Final answer:
Toners are products that help to lower the pH of the skin after cleaning and remove excess cleaning products, thereby restoring the skin's pH balance after using alkaline cleaning agents.
Step-by-step explanation:
Products that are designed to lower the pH of the skin after cleaning and aid in the removal of excess cleaning products are called toners. These products not only help to balance the skin's pH but also ensure that all traces of cleansers are removed from the skin. Toners can be especially beneficial in correcting the pH balance of the skin after using alkaline cleaning agents, which can have a high pH and may disrupt the skin's natural pH level. It is important to use alcohol-free toners to avoid irritation and to follow up with appropriate skin care like moisturizers after toning.