Maintaining red hair - products and advice

[Cakeweek]

I've just had my hair coloured - not unlike below - and love it.

What do I need shampoo/ conditioner wise to maintain it please? Ideally sulphate free as after a little while sulphates make me look like I have nits.

Thanks

www.pinterest.co.uk/pin/97812623134756946/

Can't see image but my hair leeched red dye when washed. Got stained pillowcases when I went to bed with damp hair.
John Frieda has red shampoo and conditioner though I am unsure if it ever made a difference.

I have bright red dyed hair and have had for many years.
The best shampoo and conditioner I have found is the Orchid oil ones from OGX. It's not cheap at around £7 per bottle but you can usually find it on 3 for 2s in places.

Don't wash your hair everyday. Water strips the colour. Avoid swimming!! Makes mine fade like crazy and have it done regularly. I have mine redone every 5-6 weeks and it's usually ready by then.

You will dye everything pink, especially pillows and towels. And don't forget to carry an umbrella. One unfortunate rain storm had streaks of pink running down my cheeks and neck.