I have a young and rather trendy client coming to me on Saturday, She has short Wedgie 'Frankie" cut which we sliced through with l'oreal platinum plus and 30vol, looked great. Beautifully creamy and still Glossy and healthy (No buble Gum here!) this was 6 weeks ago. She popped in about 2 weeks ago saying 'love it! but i really wanna go silver!". I sent her away with the Paul Mitchell Platinum shampoo and when i saw her yesterday had taken on tone but not enough! I think she wants it really Blue! So was thinking on Saturday of topping up roots with Platinum then toning with an Ash but i am frighteed that rather then going blue it will go a dingy grey colour. We use L'oreal colours (Richesse,majerel,Inoa) Any suggestions?