Coloring your hair can give you a lovely change and can help you better reflect your personality. Women are always changing their moods, and whether you're a girl interested in coloring your hair for the first time or are a dying fiend who heads to the salon for a new 'do every other month, it's always important to do the 'do right. Dye your black hair a blue-black shade for a subtle change and a healthy-looking sheen.
Wrap a towel around your shoulders. It's best if you put on some old clothes too, something you don't mind ruining if you happen to spill some dye on yourself. Coloring your hair a couple of days after your last shampoo is best--color sets better and lasts longer when applied to slightly dirty hair.
Read over the instructions and prepare the hair dye accordingly. Even if it looks easy enough to do on sight, it's always good to read those directions just to be sure. Different brands and colors of hair dye often require different preparation steps, so be extra careful to make sure you end up with the hair color you want.
Pour the mixture into an applicator bottle. Some girls prefer to apply their color using a hair-coloring brush and bowl, but standard at-home coloring kits stick with the standard applicator bottle. It's really the easiest way to add color when you're doing it yourself at home; the tapered tip on the bottle ensures precision when coloring.
Aim the applicator bottle downward over your hair. For a solid color, start by coloring the front sections of your hair and work your way around to the back. Squirt a small amount of the dye onto your hair, near the roots, and rub the color in down the length of the hair. Check both sides to make sure all of the hair is coated in the dye--you don't want to miss spots and have them show through when you put your hair up--then move on to the next section.
Continue coloring your hair this way, moving in sections around your scalp. It can be a bit tricky at first--looking in a mirror helps. Don't overdo it; if you have shorter hair you may end up with some dye left over and that's OK. Your main concern is not to leave any dry spots; you don't want a Dalmatian-style 'do after you're done.
Let the dye work its magic. To go from black to a blue-black shade it probably won't take any longer than 25 to 30 minutes; refer to those instructions again to be sure. If you have quite thick, coarse hair, leave the dye in for an extra 5 to 10 minutes just to make sure the color sets so you have a noticeable difference after. You're still sticking with the same shade of hair, just with a blue tone in it, so it's no big deal to keep the dye in a bit longer than normal.
Rinse your hair out thoroughly until the water runs clear. You may not see a difference while your locks are still wet, but once your hair is dry you should see a lovely blue tone in it. It's easiest to see the change in natural sunlight, so head outdoors and check out your new 'do, girlie.
A blue-black hair dye rinse can get you the same look, without the damage of a regular hair dye. In fact, natural treatments like henna and natural rinses improve your hair's condition.