Concealer is used to cover blemishes, dark circles, and other imperfections on the skin. It provides targeted coverage that foundation alone might not achieve, creating a more even skin tone.

The "best" concealer is subjective and depends on individual needs and preferences, such as skin type, desired coverage level, and preferred finish. Researching reviews and trying samples can help determine the ideal concealer for specific concerns.

Foundation provides all-over coverage to even skin tone and texture, while concealer targets specific imperfections. If minimal coverage is desired, concealer alone may suffice; otherwise, foundation can be used as a base, followed by concealer for problem areas.

A hydrating, lightweight concealer with a radiant finish is typically best for under eyes. Creamy formulas prevent creasing and dryness, while a touch of luminosity can brighten the area and minimize the appearance of dark circles.