Natural Effect Eyebrow coloring kit uses the principle of safe coloring, natural and perfectly shaped lashes and eyebrows will be visible at first timing. Waterproof & Sweatproof Water and sweat resistant formula, the colour will not come off easily even when swimming or sweating. (Note: Please do not touch water immediately after colouring) Iong-Iasting Eyebrow coloring is not disposable and lasts for approximately 6 weeks after it has been fully colored. Gives you natural looking brows for longer and saves you time on make-up.