Because bleach works best on virgin, or unprocessed, hair, experts recommend not processing your hair for at least three months before bleaching it. Your hair is more susceptible to damage if you dye it and undergo intense hair treatments, like straightening treatments, then immediately bleach it.
Is it okay to bleach virgin hair?
“The process really depends on the hair type, but a bleach on virgin hair will need bleaching on the ends first leaving an inch or so regrowth, then allowing this to lift for up to an hour and then bleaching roots to match,” says Shannon Gallacher, bleaching expert at Nicola Clarke for John Frieda.
Can you use bleach on non virgin hair?
Yes you can bleach dyed hair. Infact when hair is not dyed you don’t really require to bleach hair unless and until you are looking for a very bright hair colour. Only when your hair is dyed you need to bleach it to change to another colour.
How long should I leave bleach in my hair if it’s black?
It can take anywhere between 15 and 30 minutes. 30 minutes (Ideally, try to split the process into multiple sessions.) 30 minutes (Most challenging hair type which may need a minimum of two sessions.) 10 to 15 minutes (Thinner cuticle layer that tends to bleach faster.)
How long do I leave bleach in my hair 40 vol?
You should leave 40 volume developer in your hair for a maximum of 20 minutes. If you leave it in for longer, your hair could be irreparably damaged. Your hair would run the risk of drying out, becoming brittle, and even breaking.