After last month's boozy, party-filled weeks, many of us embark on Dry January, quitting alcohol, eating healthily and hitting the gym - hard.
Have you ever considered, however, that you should be detoxing your skin, not just your liver?
"It's common for people to overindulge during the festive period," says Tracey Wilmot, training and education director at Murad.
But, she warns, all those glasses of fizz and tins of Quality Street take their toll: "Excess alcohol and high-sugar foods can lead to loss of radiance, dehydration and a dull-looking complexion."
On the other hand, you might be seeing more blemishes or blotchy patches.
"If you're experiencing oilier skin, breakouts or the skin shows signs of redness or sensitivity, it could be time for a detox."
That doesn't mean going cold turkey on skincare - far from it - though there are some products you may want to ease off on.
"Depending on your skin type and the concerns you are looking to address, there are a variety of things you can do that will help cleanse and reboot your system internally and externally, to get your skin back in shape," says Wilmot.