I am doing a clients hair and she does not want permanent colour or bleach. She is 60% white grey and the rest is a yellowish colour on the ends. I don’t think our water supply helps. She has used various toners but she wants to lighten up to get an even colour. She has three shades darker mousey grey then white grey then her yellow tones on the ends. I suggest foil work to cover most of the yellow with a high lift tint as it isn’t as harsh as bleach but with olaplex? Is there any other suggestions anyone has? Her hair is in good condition but on the thinner side.