As you can see in the picture it's all of a sudden turned a gingery brown colour
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This used to happen to me too because my ends were lighter and a bit more damaged. What I do especially with newly dyed hair is get a sulphur free shampoo and conditioner and condition my ends only. That way colour doesn't strip too quickly. I would actually put a deep red over your hair again just focusing on the ends if you want to dye your hair again.
Make sure to fully saturate the ends and even rub it in a little then at the end put the dye all over your roots and let it sit.
Your hair doesn't look bad though!
Let us know how you go!