I dyed my hair a dark red colour and I would like to know when's the soonest time I could dye it black?

-So on the 19th of July, I dyed my hair using L'Oreal Feria Violet Black hair dye. MInd you, the dye was absolute rubbish. It said it'd dye your hair so that it would come out black with a purple tint... However, my hair came out burgundy. I would not suggest this hair dye to anyone that fancies black hair with a purple tint. Anyways, on Tuesday the 19th, I dyed my hair with the L'Oreal Feria hair dye and it came out dark red and I didn't necessarily like it so I purchased a jet black hair dye, since black was the initial color I wanted, and I was wondering when it'd be safe/how long shall I wait to re-dye my hair with the jet black colour? I've now dyed my hair three times, all dark colors and I've never bleached my hair. Thanks! :3I don't really think it would matter that much i used to dye my hair a really bright red colour for a year and a half, and if i was going to a party and it started to fade i'd dye over it i never thought about how long ago i'd dyed it before. I think you would be fine to dye it by now i mean i guess if you wanted to wait then a week would be long enough i'd say bu if the last time you dyed your hair was the 19th, then i'd say dye it soon (:Try to recondition your hair to health and maybe wait a minimum of a week, but a month is recommended :-) you could also colour strip your hair to get that red out so the black is easier on your hair but you would have to dye it black right after the red is removed. hope this helped xx
Any time, HOWEVER a very dark brown is better than a black dye, you will have to strip your hair once you have dyed it, also not many people suit an actual BLACK its too harsh i wouldnt use it if i was you.
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