The blonde is NOT bleach, if used properly it should work beautifully on any hair color! :)
It has cationic poly-level conditioning agents and ionic wheat germ protein as well as crystallized micropigments making it smooth and easy on hair when dying: also works wounders covering up unwanted colors including grey and roots! Thanks for your interest!
Also to mention i have died my hair between dark brown, back to platnium blonde, to natural blonde, to red, to brown , to aburn with these hair dyes- looks beautiful and flawless EVERYTImE and ig never causes my hair to dry out in the slightest ; actually my hair becomes more conditioned and softer after using these products/ i know you'll love them!