Like puppies, heads of hair need to be pampered regularly or they’ll leave a mess on the couch and act up every time you roll down the car windows. Calm unruly coiffures with today’s Groupon: for $99, you get a keratin treatment from hairstylist Amanda McCormack at K’Bae Salon in Pittsford (a $250 value) .

Stylist Amanda McCormack smoothes frizzy tresses with GKHair keratin treatments that pack hairs with straightening peptides. The exclusive Juvexin serum adds strength and pliability to once-brittle strands, leaving it as sleek and brushable as the fur on the underbelly of a new sports car. Hair usually remains silky for up to four months. McCormack’s keratin treatments can also help revitalize over-processed, bleached, or emotionally damaged hair.

Some hair-straightening products that claim to be formaldehyde-free include aldehyde compounds, which are similar to the carcinogen formaldehyde. Side effects may include nosebleeds, headaches, vomiting, and respiratory problems, among others. Learn more about the health risks here.