This is a refill component designed for the Guerlain Customizable Lip Care system. It allows for the personalized replenishment of your favorite lip treatment formula, ensuring continuous hydration and comfort for your lips. As a refill, this product is an innovative way to sustain your daily lip care ritual. It offers the high-quality formulation expected from Guerlain, delivering essential moisture and a smooth finish to the lips, suitable for daily wear under lipstick or on its own.