Straightening hair no longer needs to be unhealthy as Straight Wear's ground-breaking Smoother delivers effective long-lasting results in a single product application! Enriched with Macadamia Oil's unique composition, Straight Wear's innovative ' Shine Shield' technology literally encapsulates hair to restore & rebuild hair the healthy way. & unlike any other smoothing system on the market, Straight Wear delivers up to 4 months of hair straightening with no formaldehyde, no thioglycolic acid, no lye or other harsh chemicals used in the process.