Can I put ash blonde on bleached hair?

You may need to tone your hair, if not bleach it before doing a light pastel blue shade. Yellow and blue would result in green hair.

It can, especially if you are using a cool color—cool colors like ash always look darker than warmer ones like gold—or if your hair is porous. If you are worried...

Yes, but if you dying it more than 2 levels darker you may need to use a filler. Filler is a color that replaces the underlying pigment in the hair....

It sounds like you have over-toned. Stop dying your hair and it should fade back to a brighter hue. You could also try washing your hair with a clarifying shampoo...

The best way to repair bleach damaged areas is to purchase a restorative treatment. You should do these treatments at least once a week, if not twice a week depending...

The next time they use the nickname, just correct them by reminding them what your actual name is.

Yes, that's actually much easier than doing it the other way around. How long it takes depends totally on whether your hair was dyed brown in the first place, though.

Well, dying your hair is never really healthy, although it can sustain some color without being seriously damaged or anything like that. I guess the answer really depends on how...

You can, but it's probably best to wait until the next day, unless you're worried there's still some bleach residue in there.

Jojoba oil will be great for your hair, but after using it, shampoo very well. Finish off by using cold water.