What it is: A self-propelling, self-sharpening, water-resistant brow pencil.What it does: This updated water-resistant formula with an added spoolie is self-propelling, self-sharpening and brow-defining. M·A·C Eye Brows Styler offers grooming alongside extreme colour precision in one dynamic microfine pencil that emulates fine hair-like strokes on brows for a perfected look. This eyebrow tool confidently adds what you need: shape, colour and/or density. Like a pen, this eyebrow liner creates its own just-right point for striking water-resistant eyebrow arches. Easy to tote around—no sharpener needed. The long-wear (up to 12 hours) styler features excellent color payoff that's smudge-proof, non-fading and humidity- sweat- and water-resistant. How to use: Apply using small, quick strokes to fill in and shape for a perfectly defined, natural look. The microfine tip mimics the look of natural hair.