Consumers whose style creation process involves straightening with hot irons are frequently troubled by frizzy hair. The cause of this predominantly relates to re-adsorption of moisture from the environment, which leads to progressive reversion of the water-set. The occurrence of frizzy hair is often exacerbated by high humidity conditions.  If you want to show how your products control hair frizz, then you might consider performing a frizz control test.  These experiments can also be used to investigate the humidity resistance of styling treatments.

Image analysis is used to assess the shape of heat straightened hair in the presence of elevated humidity conditions. High quality photographs show the progressive reversion of the hair shape as a result of the external stimulus.