I dyed my light brown to dark blonde hair red last night w/ 100% garnier hair color (permanent). I would really like to return to my natural shade before a reunion I have in three weeks. Will it wash out by then? Will washing with prell and dish soapwash it out just fade the color or will it wash it out?
I definitely don't want it to be orange? Any advice?

I dyed my light brown to dark blonde hair red last night w/ 100% garnier hair color (permanent). I would realy like to return to my natural shade before a reunion i have in three weeks. Will it wash out by then? Will washing with prell and dish soapwash it out just fade the color or will it wash it out?
I definately don't want it to be orange? Any advice?
Also my hair is very healthy and hasn't been dyed in two years