Guerlain Eyebrow Kit. The Guerlain Eyebrow Kit structures and stylises all eyebrows for a tailored yet natural look, thanks to its three powders, a highlighter and a double applicator. Designed to adapt to all tones, the three universal colours light, medium, dark blend together to create just the right shade. The slightly pearly beige highlighter is swept on under the brow line to gloss the brows while making the eyes look bigger. These evanescent hybrid textures adjust over and over, allowing for wet & dry application on a whim for intense or natural eyes. The only rule is that there are no rules!