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 the Lipstick icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.