What it is: A brush made with synthetic fibers that provides natural, buildable coverage and an airbrush finish. Brush Formulation: LiquidBrush Coverage: Buildable Bristle Type: Synthetic Ingredient Callouts: It is cruelty-free . What Else You Need to Know: This custom-cut complexion brush is a makeup must-have to create a natural, airbrushed finish. It works to apply, build, buff, and blend any liquid or cream formulas. The bristles are made with 100 percent synthetic fibers and the handle is made with PCR (post-consumer recycled) plastic.