It's a picture of a lipstick. The lipstick is without the top cap and the lipstick is sticking out a bit and used in an angle where the left side is worn down more and in an angle going to the right.
This is a Lipstick 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 13,300 icons, all in the same style and quality.