Unwanted tone

I visit the salon every two to three months either to have color retouch or to change the shade completely. The main problem when it comes to my hair color is its natural orange tones. My hair colorist' usual solution to this problem is applying ash color to kill the unwanted orange tones. This usually doesn't last for a long time due to hair color oxidation. Hair color oxidation can be caused by shampoos or sun exposure. In my case, it is the latter.