Hair health, like a canary in a coal mine, can indicate dangerous toxins or whether the area is overrun by cats. Foil feline hair-nesters with today's Groupon: for $30, you get a deep-conditioning or hot-oil treatment with a style and blow-dry at Elements Salon Spa Retreat in Dyer, Indiana (a $75 value). The Salon is open Tuesday–Saturday.

Stylists at Elements Salon Spa Retreat placate unruly coiffures with treatments designed to fortify each strand against environmental and styling damage. Ravaged manes rediscover their natural pride with a deep-conditioning or hot-oil treatment, which locks in moisture to repair scraggy cuticles, increase shine, and strengthen 'dos against wayward bouncy balls. During the deep-conditioning treatment, stylists knead the treatment into heads of hair before sitting clients under gentle heat to maximize each cuticle's absorption of the serum. Alternately, recline as hot oil slides along hair strands and bestows nutrients, shine, and terror to barricade-storming knights. Each treatment rinses clean from sleek strands or curls, followed by a blow-dry and expert style to maximize the attractive nature of newly softened locks. The treatment and style take 45 minutes to an hour, and guests can satiate their palates with complimentary coffee, tea, wine, and snacks.