Alcohol + late nights + rich food + lack of exercise = seriously partied-out skin.
But don't worry, there are plenty of sneaky ways to transform your skin from dull to dazzling by the time the cab arrives to pick you up tomorrow night.
Too much alcohol and salty food (step away from those crisps and nuts) can lead to water retention and leave peepers looking puffier than a rapper's jacket. To eliminate the build up of fluid around the eyes, drink plenty of water (at least two litres a day) and try tapping the area around the eye gently with your index finger when you wake up. This boosts circulation and helps to flush the water away.
Top treatment: Massage the area around the eyes with Clinique All About Eyes Serum Depuffing Eye Massage, £20.
Quick-fix trick: Fake wide awake eyes by lining the inner rim of your eye with a white eye pencil. We recommend The Body Shop Eye Definer in white, £8.
Lack of sleep combined with excessive alcohol consumption inevitably results in panda-eye syndrome. But luckily there are an array of products available to give eyes an instant brightening boost and even out skin tone.
Top treatment: Try L'Oréal Paris Collagen Micro-vibration Eye, £10.99. It combines skincare and electric technology to target dark circles and bags.
Quick-fix trick: Dab under the eye with a light-reflecting concealer to disguise dark circles in a flash. We like No7 Instant Radiance Concealer, £13.50.
Alcohol is the number one culprit for dehydrated skin. Combine that with winter's freezing cold climate and moisture-sapping central heating and your skin can end up more dry than an overcooked turkey.
Top treatment: Drench your skin with water using a hydrating moisture mask such as Phyto Paris Phytojoba Intense Hydrating Mask, £18.50.
Quick-fix trick: Fake a hydrated, dewy complexion by dabbing skin with a radiance balm such as Elizabeth Arden Eight Hour Cream Skin Protectant, £23. Dab gently over cheekbones and lips but steer clear of your T-zone. You want to look glowing, not greasy.
When your body gets tired, so does your skin which causes it to lose its natural lustre and radiance. Nothing beats the power of a good night's sleep but there are a few things that will help to restore your natural glow when bed is not an option.
Top treatment: Buff away the dead skin cells that cause a dull complexion by massaging clean skin with gentle circular motions using an exfoliator such as Sanctuary Radiance Exfoliator, £7.49.
Quick-fix trick: Cheat your way to a healthy glow by applying a brightening serum to the skin before your foundation. We love MAC Prep + Prime Skin Brightening Serum, £26.
Fat-laden Christmas dinner and sugary chocolates, pies and puddings can send your skin's natural oil supply soaring which can lead to breakouts at the worst possible time.
Top treatment: Keep oily skin matte by blotting your T-zone with oil absorbing papers before you apply your makeup. We like MAC Blot Film, £10 for 30 sheets.
Quick-fix trick: Disguise a pre-party break-out by dabbing the offending spot with a rich, creamy concealer after you have applied your foundation then dust over with a loose translucent powder. We recommend Rimmel Hide The Blemish Concealer, £4.49.