So I had a sandy blonde color in my hair naturally, but JUST(yesterday) died it medium golden brown from Garnier. Well it turned out RED! Like very auburny, and I really don't like it! I really want to go back to blonde. I know it won't be natural, but that way when my roots grow in it would look normal. What do I do? P.S. I can go to a professional. Would they be able to do this?

If you use box hair dye this is one of the reasons your hair turned out redish.
There is no garentee that your hair will come out even colse to what color is on the box.
I have went through this many times.
There is a number on the back of the box, if you call it they will tell you some alterative solutions to making it look how you want it.
Next time, if affordable it is best to have it done perfesionally.
There is quite a few benefits of it,
Best wishes MandyMandy.