AYU Highlighting/Concealer Brush. Vegan Friendly. Non-shed. What is it?. Hand crafted, this round, tapered brush makes application of product easy and precise.. What can I use it for?. It is ideal for applying highlighter and setting powders. Swirl over cheekbones, brow bones, and décolletage for a finished appearance.. This brush is also ideal for application of concealer. With its super soft fibers it blends out concealers perfectly every time.