Fingernails act as each finger's shield, protecting it during daring ventures into pants pockets, explorations between sofa cushions, and treks through dragon-infested puppy fur. Buff your bulwarks with today's Groupon: for $20, you get a classic mani-pedi at Tes Nail Spa (a $40 value).

Tes Nail Spa's adept detailing doyens tidy digits to a clean sheen with a wide roster of rejuvenating and embellishing techniques. During the classic manicure, nail gurus soften and treat uneven cuticles before trimming tips into smooth arcs or perfect parallelograms. Lotion softens weathered skin, and a massage soothes tense grasping muscles. The hand service culminates with a slathering of nail polish in the client's color of choice. The classic pedicure begins with an antibacterial tablet soak, followed by an exfoliating sugar scrub to sweetly lure away the outer layer of dead skin. The prettification professional then deftly shapes and polishes each toenail before rubbing down the entire foot with soothing lotion and a hot towel, leaving feet as smooth and radiant as a freshly shaved diamond.