Maintaining rose gold hair

[wonderpants]

Anybody found a holy grail to maintain rose gold hair?
My hair is bleached (to fuck) and then has a rose gold toner but I know from bitter experience hat it fades fast.
I've tried bleach rose shampoo and conditioner which leaves my hair feeling like straw. I can use crazy colour rose gold will top up but fades fast. Anybody got anything else worth trying?
Thanks

My hairdresser recommended Celeb Viral colour depositing shampoo (my hair's purple, but they do a rose gold one. The only problem is it can be quite hard to get hold of and can be expensive, although I find a bottle lasts quite a long time (about 6 months). I scour the internet until I find one at the right price.

I use the shampoo once a week, I shampoo as normal, then use the depositer shampoo, leave it in for a few minutes to increase intensity, then wash out and condition as normal. I wash my hair every other day, and it fades over the week to a lilac.

This one is a good price actually: https://www.justmylook.com/celeb-luxury-viral-pastel-rose-gold-color-wash-244ml-p19502/s22766?utmsource=google&utmmmedium=cpc&utmterm=celeb-luxury-viral-pastel-rose-gold-color-wash-244ml-119920&utmmcampaign=product%2Blisting%2Bads&cid=GBP&gclid=EAIaIQobChMIl8ej89CR8QIVchoGAB1iAwZQEAQYASABEgJKNPD_BwE&gclsrc=aw.ds

Fab, I'll have a look at that, thanks!