The L'Oréal Paris Infallible 3-Second Setting Mist Spray is a professional-grade aerosol setting spray that locks in makeup for up to 36 hours. Its ultra-fine micro-diffusion mist dries instantly, creating a lightweight, breathable seal that resists transfer, smudging, sweat, and heat. It ensures a natural, flawless finish without leaving any residue or stickiness.