From my experience, waterproof liquid eyeliners are a must-have in any makeup routine, especially when looking for durability throughout the day. The NY professional waterproof eye and body liquid liner stands out because of its dual-purpose formula, allowing you to use it not only around the eyes but also on the body for creative looks or even special events. I found this liner to have excellent pigmentation, delivering a sharp and clean line with just one stroke. The waterproof formula truly holds up against sweat, tears, or even water exposure, making it ideal for hot days or outdoor activities. Additionally, its fine tip makes precision easy, whether you're going for a bold winged eyeliner or subtle definition. One tip to extend the liner's wear is to let it dry completely before blinking or touching the area to avoid smudging. Also, its longer wear means less need for touch-ups, saving time and effort in your daily makeup application. If you're on a budget, purchasing two eyeliners for $12 plus shipping is a great deal, ensuring you have a backup or can share with a friend. The product is compact and travel-friendly, so carrying it in your makeup pouch is convenient and space-saving. Overall, this eyeliner offers a professional quality finish with the convenience of waterproof technology, perfect for everyday use or special occasions where lasting power and versatility are key.