In the winter, the air sucks moisture from your hair and scalp and converts that moisture into snow. As you prepare for this winter by gathering nuts, sealing windows, and weatherproofing your vehicle, give your head its own set of snow tires with today's deal to Diadem Salon. For $25, you'll get $50 worth of salon services to keep your hair healthy and beautiful. Do your part to blanket the city in a winter wonderland of gleaming hair. Follow @Groupon_Says on Twitter.