I highlighted my hair with foil and I want more highlights how long do I have to wait to do this
if you used bleach, the safest thing would be to wait until it grows out. but if you did use bleach and you don't want to wait, you should still wait a few weeks, and then if you do put more highlights, the old highlight will be lighter, and more brittle, or they could just fall out.
If you have them done at the hair dresses then your har dresser can go over them and add more in for you,but if you do them yourself it should be fine to them straight away aslong as you havent coloured the same hair if not id advise 1week at least as they can damage your hair.
To put more highlights? You can just do it right away if you feel like it.