you probably used the dump and rub method.just dump it on and rub it in.this is damaging to the hair.just color the regrowth and apply a shampoo cap the the rest after the first processing is complete.leave on for 5-10 minutes and shampoo out.a shampoo cap is ,take the rest of the color in you color bottle and add about 1/2 tsp of shampoo and also 1/4 cup water.roll the bottle around to mix and then dump and rub.leave in 5-10 min and shampoo out.