"I have been using the curly wave pack for less than a year. No more expensive excess of hair mousse. Thanks to the trio shampoo bar, conditioner bar and leave in, the hair is fed enough to omit that expensive hair mousse. No more frizzé hair. The lifespan of these products is also more than twice as long as commercial bottles / jars. And as a great surplus, this system is not harmful to the environment. So don't hesitate.."