I have med brown hair dye and want to go red brown. Should I dye roots the old color 1st to make it even & then recolor with new shade?
Should I use a color remover first? I want to go from Nutrisse 50 to Nutrisse 558 and have 1/2" natural growth. My real hair is thin, med length, dark brown. Can I retouch my roots with 50 to make it all the same and then recolor the whole thing with 558 on the same day? Next day?