What is the specific function of a freshener?

The specific function of a freshener is to restore the natural pH of the skin after cleansing. During the cleansing process, the skin's natural oils can be stripped away, and the pH balance of the skin can be disrupted. A freshener, also known as a toner, is designed to help bring the skin back to its optimal pH level, usually around 4.5 to 5.5, which is slightly acidic. This restoration is important because maintaining the correct pH is essential for the skin's health and barrier function, which helps protect against environmental stressors and prevent irritation.

Additionally, restoring the skin's pH can improve the overall efficacy of other skincare products applied afterward, allowing for better absorption of active ingredients. While fresheners may have additional benefits, such as providing hydration or helping to tighten the pores, their primary function is linked directly to pH balance.