What is the function of a toner in skin care?

The function of a toner in skin care is primarily to balance the skin's pH and remove any leftover impurities after cleansing. When cleansing the skin, certain cleansers can disrupt the natural pH balance, making the skin more alkaline. A toner helps restore the skin's natural acidity, which is essential for maintaining a healthy barrier function.

Additionally, toners are formulated to remove any residual makeup, dirt, or oil that may have been left behind by the cleansing process. This cleansing step can help prepare the skin for subsequent products like serums and moisturizers, allowing them to be absorbed more effectively.

While some toners may contain hydrating ingredients, their main role is not to add moisture but rather to refine the skin and ensure it is clean and balanced. Other options, like providing sun protection or brightening the skin tone, are functions attributed to different skin care products, emphasizing the unique role that toners play in a comprehensive skincare routine.