Dispel the Myths: The True Function of Cholesterol in the Body. FAITH MONEY and the Coming Collapse: New mini-documentary from the Health Ranger eviscerates govt. economic LIES...
Best Answer: The directions say to leave the color in for  30 minutes if you want it to last for six months. That refers to the color, NOT the bleach! I myself left the color in for an hour, but the life of the color really just depends your shampooing habits. Also, for Pete's sake, don't let any of the dye get on anything but your hair, as Splat tends to stain unforgivably.
Sealing hair color. 1  1. Use a flat iron to seal your hair color. Once the hair is freshly dyed, make sure you or your stylist goes over it with a flat iron after it's dried. 2  2. Wait before washing your hair. Don't wash your hair for at least 48 hours.