You must condition when you're done. "If you skip the conditioner step, it leaves the cuticle open and the color keeps working," says Ionato. "So don't be surprised if you end up with much darker hair than you wanted." Don't throw away the conditioner in the kit, and if you do, make sure to use a deep conditioner in the shower after you rinse out the dye.
On the In_Between Days, Use a Color_Safe Dry Shampoo on Color_Treated Hair : To help keep color_treated hair looking fresh, flip your hair over and spray dry shampoo at the roots to soak up oil. After Coloring, Wait 2 Days Before You Shampoo : When you color your hair, wait at least 48 hours to shampoo, preferably longer. If you can go three or four days before shampooing, even better. This will give the color plenty of time to set. When You Don’t Shampoo, Keep Your Hair Dry in the Shower : During those off days, wear a shower cap to keep your color_treated hair from getting wet while showering as this can cause some color to fade. Or, pull your hair up into a loose bun or a ponytail to protect it from getting wet.