You should know:
This process takes at least 3 hrs.
Wash
Dry
Apply Kera Straight
Dry
Iron tiny strands for hours
Wash
Dry

I color my hair at home and it stripped all the color out of my hair, leaving it YELLOW. 2 toners 2 days later did nothing. I finally went to Whole Foods and got some organic hair dye, which fixed it and didn't hurt my hair. It just doesn't last long.