What's the best shampoo for dyed hair?

what is the best shampoo for dyed black hair? I recently dyed my hair and I love it black, but it fades into brown even though its permanent. I use tresemme shampoo for brunettes, and I dont trust pantene even though they have shampoo for midnight...

colored hair. Please help I want to keep my hair up!

welll.
i use loreal vive shampoo.
for color treated hair.
it works pretty good in my opinion.

Good answer if you can't find it in your area Google Armstrong McCall and find a local store they can not sell to you but tell them your needs and they can tell you what you need and a local salon that will Carry the products your looking for. . . . Trust me My family owns a small salon and rents out chairs to beautician.

Did you go to the salon to have your hair colored black or did you do it yourself? If you did it yourself, tell me what you used.

Hi i use sunsilk for colour treated hair its works really well good luck

Hello I have a friend that dyes her hair often. She has really thicke hair and her color stays in for about 6 months. She uses Garnier Fructis Color treated shampoo and conditioner.

I used this permanent hair dye called ion from sally beauty supply.

She posted that in a new question...I posted it here for her so it makes sense

Also, shampoos containing sodium laureth sulfate (instead of sodium laurel sulfate or ammonium laurel sulfate) are less harsh on hair, and dye will not fade as quickly.