This matte black iquid eyeliner provides a long-lasting, waterproof hold that stays over 18 hours without smudging. Its flexible, ultra-fine tip allows for an easy and precise application to help you create an impeccable look. Tested under dermatological and ophthalmological control.David Vincent's tips:For a more precise application, use the edge of the applicator instead of the tip. This technique will ensure better precision and control when creating your line.1. Draw a small line (resembling a comma) at the outer corner of the eye.2. Lenghten the line to the inner corner.3. Finish by filling in any gaps to complete your line.4. For optimal results, store your eyeliner with the tip facing down.