Christmas is a time for over-indulging in everything except our beauty regime. We burn the candle at both ends, eat too much, drink too much and basically make merry, often falling into bed without any thought for removing all that slap we have been wearing. Is it any wonder that our skin suffers, looking drawn, tired and lacklustre, just as New Year’s Eve hits and we want to usher in 2016 looking our best? This Christmas, one of my favourite beauty products of all time has been celebrating its 20th birthday with a very special festive edition. Liz Earle’s Cleanse and Polish is legendary in beauty circles due to its…