Keratin treatments use an all-natural process that makes hair smooth the same day, trumping the previous method of holding it under a waterfall for two billion years. Erode obsidian locks with this Groupon.
Choose Between Two Options
- $136 for one keratin hair-smoothing treatment ($350 value)
- $241 for two keratin hair-smoothing treatments, valid for new clients only ($700 value)
Free of toxic ingredients and infused with organic botanicals, the MacVoil keratin smoothing treatment infuses hair with proteins, eliminating frizz and restoring shine for up to three months.
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.