ISO Perm Option 3About Product : As the innovator and leader in texture technology, ISO continues the tradition in keeping within trends of superior products that give you the power to volumize, curl, shape and style - without damage.ISO Option 3 for extra-firm curl on normal and resistant hair: Designed for normal to resistant hair, Option 3 produces big, expansive curls while retaining the hair`s natural beauty and shine. Ideal for dramatic and high fashion styling. Hair Type: Normal to Thick, Gray, Resistant, CoarseHair Condition: Resistant hair types; Normal and color treated (20 volume or less) with minimal porosityDesired Results: Increased body with full circle curl Increased body with waveTool Suggested: Small to medium, hard surface tool Large, soft toolTiming: For normal to resistant hair: no test curl is necessary. Process 20 minutes (built-in stop action) For tinted hair in good condition: take a test curl after processing for 2 minutes and continue to take a test curl every 2-3 minutes. Maximum processing time is 20 minutes.ISO Perm Option 3