How long should i leave red hair dye in?

Oh, also, besides using red glosser and red color protectant shampoo, is there anything else i can do to keep the color vibrant?How long should i leave red hair dye in?
I work at Sally Beauty supply and I use the Light intense red on my hair...dont EVER leave hair color on for more then 45 mins...your hair prosity will be horrible after and will never be able to be the same again even after deep cond. it. I do use red glosser and shampoos that are color protecant but that also have minor fillers lk pantene they have those for red to burgunady shampoos ect. those r awesome...also depedning on how many times u wash ur hair ever other time wash ur hair in cold water. This helps close ur hair folicule so no color will wash out..other then that theres nothin u can really do but all those things..hope this helps :)How long should i leave red hair dye in?
It's one thing to go from natural colored hair to one artificial color when doing your hair at home. But to strip, and then recolor. And with RED!!!





It would be worth the $$$ to get a professional do this for you if you care how your hair looks (color and texture both at risk) as it is correctional color. My predictions as a professional stylist/colorist are that your hair will look blotchy and uneven in color. The texture of your hair will be dry and mushy. And your color will fade out quickly.





You need to bleach the color out, yes, but it must be applied accordingly, mid shaft, regrowth, ends...then, applying a filler is a must before applying the final color if you want it to be shiny and vibrant and long lasting





Do yourself a favor and go to a pro!!





And IF you do it yourself, follow the manufacturer 's directions (Ion). It won't do you any good to leave the color on longer than recommended.