Details Laura Mercier Brow Definer is an innovative wax/gel formula that coats each brow hair in renewed color to eliminate dullness. It lightly holds hairs in place and lasts throughout the day without fading.How to use: Using a brow definer brush (sold separately), press into Brow Definer and pick up your desired amount before applying it to your brow. Use the tip of your brush to apply pigment in specific areas of need. To enhance healthy brows, sweep the brush through your brow to coat each hair with pigment. To revive sparse, troubled brows, sweep the brush through your brow with more pressure to deliver pigment to the skin beneath the hair. Brand: LAURA MERCIER. Style Name:Laura Mercier Brow Definer. Style Number: 202257. Available in stores.