Okay go find your Vaseline jar, the first time you try this do in the evening. And rewash you hair the next morning.
Apply some to your scalp then wash your hair.
Let me explain this one carefully.
Do not rub the Vaseline on your hair!
Part your hair in four or six parts, rub a tiny amount on the part lines in your scalp, then wash your hair normally. This gives your hair instant conditioning, brings out your colour vibrantly, and adds a glorious shine. I've done this and it really works. I always do it at night and rewash the next morning if your hair is very dry you may not need to wash the next morning.
This can be use on any type of hair.