Cosmetology Practice Test & Exam Prep

Using toner in skincare primarily serves to balance the skin's pH levels. After cleansing, the skin's natural pH may be disrupted, especially if harsh cleansers are used. Toners help to restore this balance, bringing the skin back to its optimal state. This balance is important because the skin functions best at a slightly acidic pH, which helps to ward off bacteria and maintain moisture levels. When the skin is properly balanced, it can improve absorption of subsequent products, such as serums and moisturizers, enhancing their overall effectiveness. While other options mention benefits such as increasing skin elasticity or providing sun protection, these are not typical functions of a toner. Toners are not specifically designed for exfoliation, which is typically handled by exfoliants or scrubs. Thus, the balancing of pH is a key benefit that makes toners a valuable part of many skincare routines.