E38 Diffused Crease Brush. Benefits: Function: Soften + blend harsh color lines. Unique Feature: Round, soft brush head. Recommended Use: Blend strong colors into the crease for a diffused effect. Coverage: Sheer to Medium. Features: HIGHEST-QUALITY FIBERS:. Exclusive synthetic antimicrobial fibers. Engineered to better hold, apply + blend products. FERRULES WITH UNMATCHED STRENGTH:. Durable + corrosion-resistant SigmaAlloy. Precious metal plating for shine + strength. Exclusive, patented interlocking technology. Double-threaded engineering. SLEEK, DURABLE HANDLES:. Solid polymer-based handles are waterproof. Outlasts all product formulas + frequent brush care. :