A concealer is a makeup essential designed to cover imperfections, dark circles, blemishes, and uneven skin tone, providing a flawless complexion. Available in various formulas such as liquid, cream, and stick, concealers offer different levels of coverage from sheer to full. They are often used to brighten the under-eye area, highlight facial features, and correct discoloration. With long-lasting, lightweight, and blendable properties, a good concealer ensures a smooth, natural finish while complementing foundation for a seamless look.