Best purple shampoo?

[2020times]

For removing yellow from grey hair (hairdresser said it was a build up of head and shoulders shampoo)

Thank you

Functionofbeauty.com - best shampoo and conditioner I’ve used. It’s personalised for your hair type and condition. They also cater for grey hair.
My hairdresser recommended it.

I use brighteners on my 80%grey hair to keep it well bright :-)
They are often not purple but pale lilac or white but have optical brighteners so just lift the silver /white without leaving a purple tinge
The best ones I have found are
White Hot Brilliant Shampoo
Pantene Greyology mask
TIGI Violet conditioner
Plus the Loreal pearl toner