MAC Eye Brows Styler Self-propelling, self-sharpening, brow-defining – and now with an updated water-resistant formula and added spoolie. 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.