Anastasia Beverly Hills's Flat Definer Pro Brush A1 is the essential tool for achieving clean, precise lines around the eyes. Its firm synthetic bristles excel in tightlining and contouring, delivering a polished, professional result.Ideal for both cream and powder products, this brush's thin, packed bristles ensure high accuracy for flawless application. Designed for versatility, it adapts seamlessly to both wet and dry makeup techniques.