If you are what you eat, we have reason to believe your head of hair has frequented the local fast food drive-thru one too many times. Need to give those dull locks a boost of real nutrients? Spend $50 and score a Keratin Complex Express Blowout or a Simply Smooth Blowout at Hernan Salon in Cohasset (a $200 value). If you're in search of tame tresses for a night on the town, choose the express treatment and let a stylist protein-blast and blow dry your hair to perfection. Want a look that lasts? Go for the Simply Smooth hair treatment, which is guaranteed to keep your mane silky, healthy, and shining for up to four weeks. At 75% off, this deal is worth a lot more than that makeshift mayo treatment you scraped from that quarter-pounder with cheese -- we promise. Want more? Check out Hernan Salon on Facebook.