Blinc s Tubing Liquid Eyeliner is Gluten-free. It creates an ultra longwearing, jet-black, water-resistant color layer on your skin. This formula is based on Blinc s pioneering tubing technology. The beautiful color layer binds to your skin and can't fade, flake, smudge, or run, even if you sweat, cry, or rub your eyes. The elongated handle provides ultimate application control, while the precise brush tip enables you to craft anything from fine lines to dramatic, bold cat eyes. Better hold than waterproof eyeliners, yet easier to remove. Just the simple combination of lots of warm water + gentle pressure (i.e. no makeup remover) will effortlessly peel this eyeliner off your skin and into your washcloth or hand. It s healthier for your eyes and skin since no tint or residue is left behind. Clinically tested to be non-irritating, it s ideal for long days, active lifestyles, and those with sensitive eyes or oily skin. After use, close the cap well to prevent drying.