How To Use For best use, blend liquid foundation over the skin from the inside of your face outwards, and let the bristles work their magic to create a smooth and even texture.; Product Details This is a Beyond Beauty product which means it has been sourced, tried and tested and finally declared one of the most new and innovative heroes out there. We love how versatile Otis Batterbee's 111 Foundation Buffer brush is - once you use it, there's no going back. The dense and velvet soft bristles help you create a smooth, sculpted and chiselled complexion and leaves foundation with a flawless finish.