Sigma Beauty E06 Winged Liner Brush in Beauty: NA. Sigma Beauty E06 Winged Liner Brush in Beauty: NA. Finally get your perfect, crisp cat eye with this small, sharply angled SigmaTech® fiber brush and any gel or liquid eyeliner.. Exclusive synthetic antimicrobial fibers. Function: Achieve precise control for winged liner. Durable + corrosion-resistant SigmaAlloy™. Precious metal plating for shine + strength. SGBY-WU89. E06. Sigma Beauty's drive to better your beauty routine sets the foundation for every product creation. They're looking to you and your everyday for inspiration, then infusing the highest-quality materials, ingredients and technology to build solutions you'll revel in. Every innovative beauty tool, texture, formula and cosmetic color makes your life easier, more fun and uniquely-beautiful.