The CLARISONIC™ Brush Head is made of a soft nylon derivative. We recommend that you replace your CLARISONIC™ brush head every 90 days. To mount the brush head, align the three notches with the three pins on the handle, then push down and twist clockwise. Do not use the brush head to remove eye makeup.By Pacific Bioscience Laboratories; made in the USA. Color(s): no color. Brand: None. By Nordstrom.