Vintage make-up 1936 Lydia O'Leary's Covermark SPOT-STICK.

Portable, lipstick form, pimple and minor blemish cover-up, developed by Lydia O'Leary.

Came in 3 shades, light, medium, and dark.  This has a "D" on bottom, which I believe indicates dark.

Measures about 2" long.

Please see photos.