The Real Techniques Light Layer Blush Brush has tri-layer bristle technology designed to apply a light layer of blush or bronzer for a diffused look. To be used with cream or powder blush or bronzer. Each layer of the brush was engineered specifically to work together for the perfect blend, build and blur regime. Synthetic bristles that are custom-cut, easy to clean, and 100% cruelty-free. Extended aluminum ferrules that are light weight, easy to use, and color coded.