How many washes with purple shampoo and conditioner would i need to do to remove the yellow from my hair?

i recently changed my hair to blonde and my hair dresser said to use a toner shampoo and conditioner. So how many washes...roughly.


So basically im adding silver to my hair.


Thanks!How many washes with purple shampoo and conditioner would i need to do to remove the yellow from my hair?
You will need a fair few. Probably 5 or so until the brasiness fades. If you want something stronger try goldwell toner mousse It is really good. Depending on the colour of your hair I cant recommend which number. A good one is probably 10P or stronger 10V