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's different at each level, ranging from golden for light brown to red for dark hair colors.
Use a blue shampoo, which is designed to remove orange tones. Joico Color Balance Blue Shampoo is one example of a quality blue shampoo that you can look for.
If your hair is severely damaged, it will not be possible to get a color that requires pre-lightening, such as pink, without risking severe damage and breakage.
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...
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...
Bleaching changes the structure of your hair, so the bleach won’t fade or “wear off” of your hair. However, the bleached part of your hair will eventually grow out. Once...
Yes, although you should talk to your stylist about potentially adding other layers or working in different sessions depending on the texture and color of your hair.