Like the universe and the frustration a parent feels when a child first discovers the kazoo, hair never stops growing. Reign in ever-expanding elements with today's Groupon: for $20, you get $40 worth of salon services at Hairstyles Etc. in Marshfield.

Hairstyles Etc.'s enthusiastic staff aims to make sure every client leaves its salon satisfied with newly styled hair, manicured nails, or waxed skin. Transform your tresses with a skillfully sculpted women's haircut ($15–$25), or treat your paws to a Shellac manicure ($20), which pampers the reachers with attentive care and rewards them for politely applauding at librarian cage matches. Pedicures spoil little piggies with blankets of polish ($25), and hair coloring revitalizes faded hues with fresh, vibrant tones ($45–$65, depending on length). Fellas and children can also take charge of their bushy manes with a haircut ($8–$15), and customers may use their Groupon toward foiling for long hair ($60–$90), perms ($45+), and waxing services that leave skin as smooth as a baby's pet eel.