Which hair dye brand is better for you: L'Oreal or Revlon?

I find L'Oreal last longer. I usually dye my hair jet black and don't touch up as muchWhich hair dye brand is better for you: L'Oreal or Revlon?
L'OrealWhich hair dye brand is better for you: L'Oreal or Revlon?
L'Oreal
As long as the dye doesnt have ammonia in it it's fine. I don't know the brands well but I do know that ammonia will ruin your hair. So whichever one you pick make sure it's ammonia free! It should say it on the package.