Most likely, if you used dye, it stands on the package
long hair
45-60 mins MAX
3hours
Around 25 Years.
it depend on how blonde you want your hair juss leave the beach in till the desired blondee
It will not hurt as long as it is on the hair. You should not touch the scalp or your hands with it as it will burn and you should never use household bleach because your hair will dissolve in it.
Depends on the bleach, how much colour is on the hair etc. Probably around 40 minutes, you will probably need to tone the highlights and you'll DEFINITELY need to keep checking. For a caramel you should lift your hair to an orange-yellow colour, then tone.
Usually, any time after. But you should check the dye and bleach boxes just incase. If you can bleach your hair after, just make sure your hair can handle all of the chemicals.
It depends on what type of hair you have. soft, straight take about 45 mins- 1 hour. dirty and greasy take twice as long
Hair bleach does not stay active for very long once it has been mixed. It begins to lose strength quickly and should be used within an hour.
If you already have dyed your hair a dark color you need to bleach it out, your hair should turn a blonde yellow color, then bleach it again. Then buy a white hair dye. Then leave that dye in your hair for a good 45 minutes. Then your done! I wouldn't suggest dying your hair again for a very long time because this can be very damaging. And this will work much better if your hair is its natural color.
It can cause irritation and chemical burn the skin. The same happens to your scalp if you leave it on to long.