HOW TO USE: With clean hair apply a generous amount of ELYSSA COSMETIQUES “MODELAGE STRONG EFFECT evenly over the entire length of the hair, so that there is no product deposit in the root. Pause for twenty minutes to one hour depending on the diagnosis and rinse the product. For a complete result with the MODELAGE STRONG EFFECT, use dryer and hair iron to give the desired shape to the hair. For more information, refer to the service guide. Professional use. For all types of hair.