Rimmel Lash Accelerator Endless Volume - Extreme Black - is an ultra-lengthening mascara with micro-fibers & Grow-Lash Complex;. The lash-catching brush grabs every lash for perfect separation and no clumps. Lashes look up to 126% longer in 30 days! In testing involving 24 women who experienced visible lash enhancement over time, lashes appeared 90% longer on average after 30 days. It plumps and fans out lashes for high volume, high intensity, and high excitement. Glamorizes even small and lower lashes!