In the warmer weather we generally have higher humidity and it is this that causes the curls to drop. To prevent this, use Redken SMOOTH LOCK Shampoo and Conditioner which has ANTI FRIZZ HUMIDITY RESISTANT properties. Once the hair is dry, spray IRON SHAPE 11 to each section and either iron the curl in, or set the hair on rollers. Ensure that the hair is bone dry before taking the rollers out. IRON SHAPE has a medium hold factor and will help the curl to set and hold without making the hair feeling crunchy. A light finishing spray is always recommended to seal the hair from any creeping humidity.