What is the purpose of using a serum?

The use of a serum primarily revolves around its ability to deliver concentrated ingredients deep into the skin. Serums are formulated with a high concentration of active ingredients, such as antioxidants, vitamins, and peptides, which target specific skin concerns like aging, pigmentation, or dehydration. The lightweight texture of serums allows them to penetrate the skin more effectively compared to heavier creams or lotions, ensuring that the beneficial components can reach deeper layers where they can have a more significant impact on skin health and appearance.

In contrast, cleansing the skin is typically achieved through cleansers specifically designed for this purpose, which remove dirt, oil, and impurities from the skin's surface. Moisturizing is primarily the role of creams and lotions that are thicker and aimed at providing hydration to the outer layer of the skin. Lastly, makeup removal requires products formulated specifically to dissolve and lift makeup from the skin's surface, which is not the function of a serum. Thus, the distinctive capability of serums to penetrate deeply and deliver targeted ingredients makes this choice the most accurate response.