Is it better to dye your hair when it is dirty or clean?

Answer 1

While there is some controversy about this question, it is a fact that it takes longer for the chemicals to break through dirt to perform the reaction desired. If the hair is not too dirty, the dirt will help protect the scalp from the sometimes harsh reaction to the skin. "Too dirty" is a relative term, and includes styling products and processes.

If your hair has been washed within 3 days and you have not used a whole can of hairspray on it, then you do not need to re-wash your hair prior to coloring it. It will not affect the chemical process.

They say when you're hair is dirty the hair color comes out better. But maybe they mean by when you've put some products in your hair or something, and haven't washed it in like a day or so.
When its dirty! When you apply dye to the newly washed hair shaft it WILL take BUT by washing it you have stripped it of all its natural oils WHICH is better to have present on the hair in order for the dye to adhere easier. If you've ever had your hair dyed at a salon you'll have noticed that they NEVER EVER wash the hair first, they just start applying it no matter WHAT dirt or products have built up on it. So nevermind what the over-the-counter drug store hair dye instructions recommend, DIRTY is better!!!

Answer 2

Dye takes better to unwashed hair. Of course having a ton of dirt and grease in your hair is not good either. If you've washed your hair within 3 days, it's fine, color away. If it's been longer I would wash it and wait until the next day to dye it.

Answer 3

I heard that it is better not to wash your hair if you want to lighten it, because the lightning solution is harmful to your scalp. But you might want to have a freshly washed hair (2 days before) whan you color your hair as the color will spread evenly and you will not have splothces of different colored hair)) Hope it helps)

Answer 4

It's best to dye 2-3 days after washing, assuming that you haven't drenched your hair in oil.