#1 Never pick a hair color too far off from your own. I suggest staying within a couple shades of your own color and save the big changes for the professionals in the salon. Most box colors these days have sample shades to compare with your own, so look for these on the box.
#2 Always prepare your area. Pick a bathroom with good light. Pick up any floor rugs and lay down an old towel. Clear off your counter-top space so it makes it easier to work, plus it makes it easier to see those spots of color that you have accidentally dripped. Clean those up immediately, by the way, or they will stain!
#3 Pick a “hair coloring” outfit. That’s right, an outfit that you don’t care about at all because it will be destroyed over time. For a top, it should be a button down or have a wide neck to pull up over your colored hair when time to shower.
#4 Always brush through your hair (but not the scalp) to get the tangles out. This makes for an easier application process.
#5 Section your hair into at least 4 sections. If you don’t take the time to section your hair, you will have uneven color and spots that you missed. Believe it or not, it also makes the coloring process faster so do not skip this step.