ISO Option #1. 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 1 for normal and previously permed hair: For great stand out style, this thio-free Wave Option is ideal for building definition through separation and loose, free-moving texture. Ideal for normal and previously permed hair. Gives lift and promotes movement through soft, loose texture.Hair Type: Fine or Medium DensityHair Condition: Normal, non-color treated hair, previously permed hair.Desired Results: Increased body, slight wave, minimum curl.Tool Suggested:Large, hard surface toolTiming: 20 minutes.