Hangovers can cause swelling of the bodyâ€™s tissues, leading to dark circles and puffy yes. Eyes may be bloodshot.
First, de-puff your eyes. Cold spoons (put them in the fridge first) work, or look for eye creams that contain caffeine. If your eyes are bloodshot, try eye drops like Visine.
Use an undereye concealer to mask dark circles after de-puffing and de-reddening is complete. Dark circles usually have a bluish tinge, so if possible use a orange or salmon-hued concealer, which has additional color neutralizing effects.
Eyes can have a sleepy look after a drinking bout. (In fact, you may very well be sleepy, since excess alcohol consumption can cause insomnia.) Imitate that â€œwide awake lookâ€ by curling lashes.