Rayon Fibers in FiberExtend Mascara: Visible Length and Fullness
Rayon is cellulose spun into fine fibers. In FiberExtend, those lightweight fibers add visible length and fullness alongside the mascara coating.
ingredient guide
Rayon Fibers in FiberExtend Mascara: Visible Length and Fullness
Rayon gives mascara something tangible to build with: fine cellulose fibers that add visible length and fullness in FiberExtend.
By SeneGence · 
Alan Kante, publisher · Updated
How does Rayon Fibers in FiberExtend Mascara: Visible Length and Fullness work?
It is also used in cosmetic science to add bulk and control consistency.