You might get two washes from it then you will have to put it in your hair again.
about 6 weeks
Not very long. I put red in my hair last Saturday and it looks orange. I bleached it and everything. Any temporary color like this will only last two washes then you will have to reapply it.
How long Garnier Fructis Color lasts on ones hair depends on how often the hair is washed. If hair is washed every day the Garnier Fructis Color will start to fade in a few weeks. If a person washes their hair less, the color could last up to three months.
Temporary hair color is a product that will not last long. It is very good when you are not sure I you will like the color, but the best is permanent hair coloring, the color results are much much better and last longer. If found a site that specifically comments about temporary hair color, enjoy!
Demi permanent color can last up to 24 shampoos, or 2-3 months, depending upon how often the hair is shampooed.
2-3 weeks
6-20 washes
Until you cut or Re-color it
It can last upto 6 weeks if its semi permanent and of good brand like Directions. You can try it here
As long as the unopened hair color is stored in a cool, dark environment, it should last a fairly long time....maybe a few years or so.
It may depend on how porous your hair is, but, we did my daughter'shair, it came out a awesome color, and she went to Florida and was in pools constantly (five or six times a day!). It seemed to come out a bit the first time she came out of the pool, but never budged after that. As a matter of face, I am no looking for some color remover so we can try another color. It has faded just a shade or two lighter. It has been a month and a half. Good stuff. Hope this helps.
Kool-Aid can last in your hair for a few days to a few weeks, depending on the individual's hair type, color, and how it was applied. Over time, the color may fade or wash out with repeated shampooing.