Although your body is a temple, covering yourself in bits of stained glass and swallowing thousands of candles has yet to be proven an effective beautification method. Shine up your shrine with today's Groupon: for $99, you get a keratin hair-smoothing treatment at Phoenix Salon & Spa in Mount Laurel, New Jersey (a $350 value).

Phoenix Salon & Spa's seasoned stylists relax frazzled strands with Keratin Complex smoothing treatment. The tender tress-taming treatment begins as stylists shampoo and blow-dry hair, dividing it into sections before saturating each strand in a strong protective casing of keratin—a protein naturally found in hair, nails, and Vidal Sassoon's tears. After another round of blow-drying, stylists flat-iron each section from root to end to lock in the protective proteins and infuse long-lasting shine, silkiness, and strength into formerly frizzy follicles. The treatment takes roughly 2.5 hours depending on hair length, and newly manageable manes may last for up to 50 washings with proper upkeep and avoidance of electric fences.

Some hair-smoothing products include the carcinogen formaldehyde, which may cause nosebleeds, headaches, vomiting, and respiratory problems, among other side effects. Learn more about the health risks here.