The first telltale signs of a long night of libation tend to manifest themselves in and around the eyes - dark circles, bloodshot sclera, etc. But unless you can lay claim to new parent status (the gold standard for successfully explaining away daytime fatigue to your boss), you may need to consider more dermatological measures to paper over the after-effects of your excesses.
Top of the list is Recipe for Men Under Eye Patches, a pack of disposable, half-moon-shaped sheets doused in a highly concentrated moisturiser that will ensure the return of some much-needed colour to your lifeless skin. All you have to do is press the transparent gauze against the affected area and leave it there for half an hour, while you set about tending to that other minor side effect from last night: your appalling hangover. £13.70 for four treatments, at Space NK