Any shampoos to help keep red hair dye (rinse) last longer?

I'm finally dying my hair red tomorrow! I've been waiting so long for my avatar to become apt lol.





I have dark brown hair with some natural red highlights in it right now but tomorrow I am going to dye it all red. Since it won't last very long I was wondering what shampoos are out there to help the red last a little longer?





Thanks in advance!Any shampoos to help keep red hair dye (rinse) last longer?
I have dyed red hair with a veggie dye called Special effects blood red. I put alittle bit of the dye in my conditioner whenever I wash my hair,and the colour has barely faded yet.Any shampoos to help keep red hair dye (rinse) last longer?
anything with henna extract in it will help the red last longer
there ant its still going to fade