Liquid Keratin Bold is a revolutionary patented at home treatment that infuses dark, coarse, frizzy, curly hair with keratin protein to loosen, smooth and detangle curls while eliminating frizz with just one application lasting as long as 30 days*. Liquid Keratin Bold is not a relaxer, but offers the choice to wear hair wavy or curly without frizz or straight with very little styling or product required. Liquid Keratin bold does not use formaldehyde or other strong chemicals that break down the hair shaft and is a progressive treatment that provides instant results as well as long-term benefits.For best results, use this Treatment in tandem with our Infusing Healthy Hair De-Frizz Shampoo and Conditioners with our 30-Day Bold Starter Set for Dark Hair.