So this MAC eyebrow pencil isn’t a pencil exactly, more of an incredibly fine-tipped felt-tip brow pen containing their special liquid formula. It’s double-ended, having the product pen on one side, and a sponge tip on the other end, which is great for blending. Eyebrow Pen Waterproof Fork Tip Tattoo Long Last Eyebrow Pencil 4 Head Fine Sketch