What is the primary purpose of a primer in makeup application?

The primary purpose of a primer in makeup application is to act as a barrier between the skin and makeup. This function is essential because it creates a smooth surface for foundation and other makeup products, enhancing their application and longevity. When a primer is used, it helps to minimize the appearance of pores and fine lines, allowing for a more even and flawless makeup look. Additionally, this barrier can protect the skin from the potential drying or irritating effects of some makeup products, ensuring better skin health over time.

While hydration can be a benefit of certain primers designed for dry skin, and achieving a matte finish is a feature of specific types of primers, these do not encompass the primary role of a primer. Furthermore, adding color to the face does not align with the fundamental purpose of a primer, which is specifically focused on creating a base for makeup rather than altering the skin tone directly.