“Cezanne Perfect Finish Keratin Smoothing Treatment is different: It is a formaldehyde free, next generation smoothing system that uses the latest advances in science, along with only the finest ingredients, to create a product that delivers the results of a traditional keratin smoothing treatment without the harmful chemicals. It works on all hair types and lasts for months. Results last as long as or longer than any formaldehyde systems on the market, but without the harmful chemicals. Using the best quality ingredients and without unpleasant odor, the Cezanne Perfect Finish Treatment outperforms and outlasts carbocisteine and amino acid products, and doesn’t break the disulfide bonds, which can be damaging to the hair.Is unique in that it works from the inside out in changing the overall health and shape of the curl.”