Products for coloured hair

[A.K]

I had my hair highlighted last week at a popular hairdressers. I have naturally curly/frizzy black hair and she used a gentle bleach to highlight then washed out and applied toner & conditioner etc.

I just want to know what shampoo and conditioner is best for my hair type to protect the colour and if I should start using a mask? I was given wella samples to use but the mask weighed my hair down and left it greasy.

I'm a beauty therapist, a client recommended Redkin but as they're quite pricey, I wanted a professional option first.

Thanks x