Yes the problem comes from only lightening to the nicotine blonde.
You can lighten all the way to white, however the longer you leave bleach on, the more it will destroy your hair. It’s possible to leave it on to white and then a few days later your hair just starts to break off! I would hope the colourist lifted it as far as possible without hitting the point where it would break.
Using a toner on the greys she had wouldn’t make much difference as she didn’t have many and they were spread out in patches. She can’t dye the greys darker, toning them would act as a highlighter.
Given she can’t use the dyes with the PDD PDT really her only option left was bleach. Personally I would recommend in her predicament trying microlights first.
You can lighten all the way to white, however the longer you leave bleach on, the more it will destroy your hair. It’s possible to leave it on to white and then a few days later your hair just starts to break off! I would hope the colourist lifted it as far as possible without hitting the point where it would break.
Using a toner on the greys she had wouldn’t make much difference as she didn’t have many and they were spread out in patches. She can’t dye the greys darker, toning them would act as a highlighter.
Given she can’t use the dyes with the PDD PDT really her only option left was bleach. Personally I would recommend in her predicament trying microlights first.