You will enjoy chemical straightening with relaxer up to 3 hours recommended for frizzy curly and afro hair types a botanical synthonics or mizani relaxer is used to straighten the clients hair and maintain the hair health lasts for 8 12 weeks depending on the growth rate of clients own hair once undertaken the treatment must be repeated every 8 12 weeks with fortnightly conditioning treatments to maintain the hair the treatment also includes a deep conditioner and cut