I have lots of grey hair, so apply bleach all over every few months to hide it (it works well!).
Instead of using blonde shampoo and conditioner, I use this - which is incredible:
Created with Invisi-Shield Technology it delivers extreme heat protection and an invisible long term hold without greasiness, banishing unwanted brassy tones while smoothen and strengthen dry, damaged strands leaving them looking luminous and healthy from root to tip.
www.synergyhair.co.nz
It is actually purple (don't wear white when applying it), so it works much like a purple shampoo and conditioner. Also, if you don't evenly distribute it throughout your hair (I use a thick comb to do that), you will end up with whiteish bits where it's been more heavily applied.
I love that I can use my intense conditioning shampoo and conditioner (
https://www.hairproductsonline.co.n...renzo-bond-defence-thermal-conditioner-240ml/ for anyone who's interested), to clean, condition and maintain the shine and quality of the colour; and that I can leave the colour fix-up to my styling product.
Win-win!