Toning shampoo for BKT clients

[HairSquared]

I need to bring in a sodium chloride-free shampoo for my Keratin treated clients, a blue or purple maintenence type shampoo that actually works.

What do you all reccomend to yours?

I am finding that the treatment dulls the blonde slightly.

 

[verbina]

Bump! I would like to know as well...

 

[Littletigerlily]

Same! I'd really like to know xxx