LOreal Infallible 16Hrs Concealer. Conceals dark circles and imperfections. Infallible Concealer is LOréal Paris first concealer that fights the signs of make-up melt down and lasts for up to 16 hours. Dark circles and imperfections are covered: your complexion looks even and freshly made-up. Infallible Concealer is a long-lasting, high coverage conceale.