Hair dye/bleaching help!?

So I've always dyed my hair, I've usually always kept to the red and orange family, but one day I decided to dye it a soft black by myself. I'm guess since I did it myself and it was my first time using the box dyed from the store I missed spots and some spots didn't take well.

So I had soft black hair with spots of darkened reddish orange poking threw. I went to a salon, and they decided to bleach it and try to make it one uniform color, or as close as possible to it.

The end result was not uniform and the bleach ate threw parts of my hair. Time passed and I dyed it brown. And then last winter while I was away at college, my friend used peroxide on my hair, to lighten it to a strawberry blonde, and I used a crimson wash at the bottom half my my hair, and it was fine.

But after a while I dyed it back to brown for this event I was going to.

Now my hair currently goes from the natural dark brown I have, to a lighter color (reddish) to a dark brown almost black.

I wanted to know since time has passed since I first bleached it, would it be safe to use the splat bleach to lighten up my hair so I can dye it the lusty lavender color.

My hair is kind if thin, but it's been getting healthy and it's been growing. ( since I had to cut it because of the bleaching from the salon)