Specially formulated to enhance waterproof performance and boost makeup longevity.The usage method is extremely convenient:Sharpen the pencil before use to ensure a precise, sharp tip. Gently glide along the eye contour to create a refined eye look. This eyeliner delivers effortlessly smooth, crisp lines with a clear definition that resists smudging. Enriched with a long-lasting color-lock formula, it is sweat-proof and oil-resistant, ensuring all-day wear without fading or smudging.