from dyed red to blonde

Oh dear.  What condition is your hair in at the moment? As you've already bleached it twice I wouldn't be recommending that you bleach it again. I'm not an expert but have much experience of bleaching/colouring ect . but there are people better qualified on the forum to advise you. If it were me however, I would be seeking professional advice at this stage. If you tamper with it now...you risk real damage that may be beyond help. I would however advise you to deep condition like mad with a really good quality product, such as Kerastase and you could try using nexxus emergency hair repair if you have any breakage at the moment. Good Luck.