The Guerlain Contour G Le Crayon Yeux Waterproof is a high-performance eye pencil designed for precise definition and extended wear. Its waterproof formula ensures that your eye makeup remains intact throughout the day, resisting smudging due to humidity or moisture. This pencil allows for smooth application, enabling you to create sharp lines or softly blended smoky effects with ease. It is an essential tool for achieving any desired eye look, from subtle enhancement to dramatic intensity.