Shampoo Hair After Dyeing
A: If you're talking about dyeing your hair with a permanent hair color, then yes. In fact, most hair color formulas are designed expecting the hair to be shampooed after the coloring process.
In some cases, shampooing the hair as soon as the color is rinsed out during a hair color application is part of the directions the manufacturer indicates. Permanent hair color formulas inject color into the hair shaft as well as leaving color on the hair's surface, but it is the color in the hair shaft that matters most, so shampooing the hair to remove the surface tint will give you a truer color.
However, the answer is different when you're talking about semi-permanent or temporary hair colors.
With semi-permanent color, you generally want to give the hair a little time for the color to fully absorb before shampooing, since the color will only last 8-12 shampoos. Of course, if you find that your semi-permanent hair color is too bold or too dark, you can soften the color by shampooing the hair.
With temporary color, you can't shampoo the hair after applying the color because the color only lasts until your next shampoo and would be washed away by shampooing immediately after the color is applied.
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See also:
Hair dying
Temporary, semi-permanent and permanent hair dyes
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