Toner - which shampoo to make it last?

[Snozzlemaid]

Had my hair highlighted with toner added yesterday.
Is there a good shampoo to help prolong the colour?

I'd like to know too as m just about to chuck a toner on...

Anything sls free

Thanks. Any recommendations for a particular brand?

I've tried a few but this is my favourite www.matrix.com/total-results/products/brass-off/brass-off-shampoo

Shea moisture hands down

My favourite is the L’Oréal series expert (gold one)