This is an open mascara case. The portion on the left has the applicator which is a small brush attached to the top of the case, creating a handle. The right portion creates a container that holds the makeup inside of it.
This is a Mascara icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,900 icons, all in the same style and quality.