This Instant Firmx Glow-Filter Priming Serum by Peter Thomas Roth is designed to deliver an immediate firming effect while imparting a luminous glow to the skin. It functions as a multi-purpose primer, preparing the skin for makeup application or serving as a standalone treatment for a refreshed, radiant appearance. The advanced formulation aims to smooth the skin's texture and enhance natural luminosity, offering a filtered, perfected look. Ideal for use before foundation, this serum helps to blur imperfections and boost skin radiance throughout the day.