Clinique. Just Browsing Brush-On Styling Mousse. 24-hour long-wearing brow mousse tints, tames, fills-in even the sparsest brows. Mini applicator brushes on natural-looking color that resists smudging, sweat and humidity and is water-resistant too. Ophthalmologist Tested. Allergy Tested. 100% Fragrance Free. How to use. Using short, tiny strokes and a light hand, brush mousse over brow hairs following the natural arch. Use tip of the wand to fill in sparse areas or to extend the ends of each brow.