Are you trying to get completely away from red? What shade of red do you currently have? Try a copper. Idk if you're a do it yourselfer or if you go the salon route. I hate Redken Reds they are so blah. My fave reds so far I've tried are Chi & Framesi. Although, I'm dying to try Paul Mitchell as their color line is more extensive & also because I love the way it makes my hair feels.
Anyways, if you're trying to get away from red I'd go for an ash blonde like this.
Sephora: Beauty, Skin Care, Makeup, Hair, & Fragrance
Let me tell you I'm in the midst of trying to go blonde & the red is hard to get away from. [Theres a better pic of that shade in the Sephora catalog if you received it.] I took it this hairstylist & I got a very light strawberry blonde or "golden blonde" -- wth?!
Idk if it was because he was in a rush or that he's one of those stylists that don't follow instructions & do their own damn thing.. Be prepared to bleach as thats the only way to get rid of the red..Unless you go darker. Good luck!