Before modern hair treatments, frizzy hair could only be smoothed by pressing it with an iron or by running it through the fingers of a jazz pianist. Achieve a noteworthy ‘do with today’s Groupon to Erika Taylor Urban Spa. Choose from the following options:

• For $129, you get one Brazilian Blowout (a $300 value).
• For $199, you get two Brazilian Blowouts (a $600 value).
• For $259, you get three Brazilian Blowouts (a $900 value).<p>

At Erika Taylor Urban Spa, guests put their hair in the hands of trained stylists and luxuriate on lounge furniture amid cut flowers and ornate metalwork. Aesthetes begin 90-minute Brazilian Blowout treatments by selecting between a traditional Brazilian Blowout formula and the formaldehyde-free Brazilian Blowout Zero. After pretreatment consultations, heads dip into sinks for a specially formulated shampoo that cleans locks for a comb-through with the solution of choice and lets staff weed out water-phobic witches. The products coat strands with protein that protects from humidity, refrizzing, and everyday hardships. The multistep process uses a flat iron and blow dryer, coupled with applications of mask and a smoothing serum, to tame unruly jungles into sleek and lustrous head gardens. Once the stylist completes the final blow-dry, clients show off newly lustrous cascades of hair strong enough to support a braid-climbing tower inspector and his building-code handbooks.

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.