Amazon.com: Drybar The Baby Brush Crush Mini Heated 。The Baby Brush Crush Mini Straightening is a straightening iron and paddle brush in one. It is great for touch-ups, flyaway hair, and bangs for both long and short styles. Ceramic/plastic. 8.5\" long. Imported. Smooths and straightens hair. Ionic technology helps seal the cuticle for less frizz and added shine.heats up to 400°F and has a universal voltage design. Begin with dry, detangled hair, turn on and allow to heat up for two minutes, slowly brush small sections at a time from roots to ends.