Of course you can. Semi permanent dye simply adds color to your hair. A permanent will actually cause your natural color to change. But remember this... color doesn't lift color. Therefore if your semi permanent hair color is darker than the permanent color you are going for---- it isn't going to work. You need to use a color remover before hand. And color removers are REALLY damaging to hair.
Yes, it is OK and safe to apply semi permanent hair color on top of semi permanent hair color. The end result may be a little darker though.
Yes, you can apply permanent hair color on top of semi-permanent hair color. Make sure that you do a deep conditioning treatment or hair masque before and after you color your hair.
There is permanent hair color and semi-permanent hair color. _____________ Demi permanent and temporary are also known as non permanent hair color.
Yes, but wait 2+ weeks.
Yes. Semi-permanent colors are usually applied to shampooed towel dried hair.
Permanent hair colour contains hydrogen peroxide whereas semi doesn't. Permanent colour changes the colour inside the hair. Semi doesn't. Permanent colour is permanent whereas semi only last 6-8 washes.
The permanent color should cover the semi permanent one, if dark enough. But, yes, eventually the semi permanent color will fade away.
Hot Topic and Sally Beauty both carry semi permanent black hair color.
You can but there is a chance that it can alter the results because of the semi permanent color. I would wait until it washes out before adding more.
If the scalp is in good condition and was not irritated by the semi permanent color, it's OK to apply permanent color within 24 hours after initial color service.