Bleaching for blue streaks

P.S. this is what my color basically looks like-- it might be a little lighter (more faded) nowadays.

Bleach isn't the best way to go on previously dyed hair. You need to start with a colour remover. Bleaches aren't designed to take out unnatural pigments, so you need to start with removing that then seeing what you're left with. Especially if you have dyed it previously as well.

Yes, definitely start with a colour remover. I would also advise very careful sectioning, with straight edges to the streaks as you are going to have to find them in the rest of your hair several times. If you make the sections square/rectangular they are much easier to separate out

Thanks for that advice, I was really hoping to avoid using a color remover to avoid as many negative effects as possible. Does it work the same as regular dye where I don't have to put it on my whole head?

What do you mean by 'avoid as many negative effects as possible'? Of course you can just put it where you need it, you can even just mix a tiny amount and save the rest.
Colour removers do not damage the hair like bleach does, they shrink the dye molecules so they are small enough to leave the hair shaft and be washed away, this is why the rinsing stage is so important.
if you try and bleach out red/brown dye the bleach will turn the dye molecules very orange. (The bleach won't remove them from your hair like a colour remover, it will just change the colour. Dyes go a much more neon orange than natural hair pigments) You will have to bleach several times to lighten the orange. not only is this damaging, but you are unlikely to get a nice blue over an orangey base.

I see, I guess there is always the hope that your hair is the exception. Very wishful thinking on my part.

What I meant by that is I was reading the colour b4 thread and heard it's very drying. I am worried about not getting all the product out before bleaching. I am also a bit worried about how it will look the days between the removing and bleaching, but I suppose if it's only on sections it can be slightly covered.

So colour b4 is the way to go?

It will be far less damaging than trying to bleach out permanent dye, and you are going to get a better base colour.
One or two rounds of colour remover and one bleach is much better for the hair than multiple bleaching. Colour removers are drying yes, but don't permanently damage the hairs structure as bleach does

You'll have many more negative affects from just bowling straight in there with bleach 🙂

Absolutely, colour remover is the way to go to start with. You HAVE to do this slowly and methodically to avoid breakage. You'll probably get some really interesting copper highlights in the process.

Removers are drying, but use a good deep conditioner after and you'll be fine. The damage from beach is not reversible, and as we've both already said, bleach is not the thing for removing unnatural colours and so will cause far more damage in the long run. This can not be emphasised enough! Bleach is not the way to start this process. It's what you do once you have all (or at least as much as possible) of the dye removed.

Edit to add WP got there first! lol

Thank you guys for being so helpful, glad I posted here first. I live in a small town in the US is color oops a good equivalent? Or should I order colour b4 online (I have been ordering everything online)

(I'm so impatient once I have an idea in my head, but this process is definitely going to force me to exercise a lot of patience it seems)

If you can get to a Sallys, One & Only Colorfix is a much better product than Colour Oops
Doing the colour remover will actually save you time and having to walk around for weeks with orange hair. (If you bleach you would need to wait a month ideally before bleaching again)

thanks for all your help, got my hands on colour b4 and it didn't do anything but leave the smell in my hair and house, much to my dad's displeasure, but thank you for everything. I posted another question but decided against it. I think I just have to accept that I might not be able to go blue.... thanks again!