Serum vs Moisturizer vs Toner: What Is the Difference?

Moisturizers generally help maintain skin hydration and comfort.

Serums describe a broad formulation category often used to deliver particular ingredients, but the word “serum” alone does not tell you its purpose.

Toners vary considerably, so their function depends on the specific formulation.

You do not automatically need all three.

A simple routine built around cleansing, appropriate hydration and daytime sun protection can provide a foundation, with additional products introduced for clear purposes.

Rather than asking which category is “best,” ask what function your routine actually needs.