What is the primary purpose of a moisturizer?

The primary purpose of a moisturizer is to hydrate the skin and lock moisture into it. Moisturizers contain ingredients that help to prevent water loss and maintain the skin's natural barrier. This is crucial for keeping the skin supple and healthy, especially since environmental factors such as air conditioning, sun exposure, and cold weather can lead to dehydration.

In terms of skin care basics, hydration is key for maintaining elasticity, which helps to reduce the appearance of fine lines and give the skin a plump, youthful appearance. Moisturizers work by drawing water to the skin and then sealing it in, allowing for improved skin texture and comfort.

While other options serve important roles in skin care routines—such as providing sun protection, exfoliating dead skin cells, or removing makeup—they do not align with the main function of a moisturizer, which is primarily focused on hydration and moisture retention.