Sigma Beauty E38 Diffused Crease Brush in Beauty: NA. Sigma Beauty E38 Diffused Crease Brush in Beauty: NA. Your new favorite for blending, use this soft, SigmaTech® fiber brush to diffuse color on the lid or in the crease.. Exclusive synthetic antimicrobial fibers. Function: Soften + blend harsh color lines. Durable + corrosion-resistant SigmaAlloy™. Precious metal plating for shine + strength. SGBY-WU88. E38. 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.