Hi,
I have naturally blonde hair I have been dying brunette for years a couple of months ago I put lush caca rouge in my hair and I have the red bug but the red from lush isn't bright enough I put an intense copper garnier dye om my hair last night it has made my roots a beautiful red copper but my ends from my ears down (I have waist length hair) is way darker and still brown with a red tint. Do I use colour b4 then a copper dye or try to ombre my ends and use a copper dye to lighten up my hair to match the first 3 inches of my roots?
Your roots have lifted from the Garnier dye. You don't need a permanent dye for red shades if you have a light base to start with, the peroxide is too strong and causes unnecessary damage as well as lightening your natural hair.
I've never used henna so I can't advise how it will react with the colour b4. Going forward I wouldn't use a permanent dye as it won't lift the existing colour on your hair, it's not needed on the lighter hair, and permanent reds fade faster than semis.
Pictures would help of your current hair and your ideal result, which may or may not be possible depending on how your hair is now.