Blonde Hair with Low Damage

Is the red/brown your natural colour or is it dyed?

no, my natural hair is just medium brown, the red is faded out manic panic wildfire that has left my hair stained a bit.

I would avoid box dyes, as they don't give much lift for the amount of damage they do.
If it were me (bearing in mind I am not a professional) I would bleach it once with 30 vol peroxide over coconut oil.
This should get you to a blondish shade depending on how well your hair lifts. Do a strand test first so you will know how long to leave the bleach on.
I would then use a demi permanent blonde in an ash or neutral shade, depending on how yellow your hair is after bleaching. Again I would avoid box demis and go for a professional quality one with separate developer, if you are limited to box dyes swap the developer for your own developer, 10 vol or less.
It is a difficult colour to replicate as there are lots of tones in there, she has light blonde, honey and caramel highlights over a medium blonde base.
The safest way to lighten is to use the lowest vol peroxide for the least amount of time possible. So try some strand tests to see how easily your hair lifts. If it goes to yellow very quickly with 30 vol you can get away with 20.
If you have the patience you can lighten gradually with bleach baths.

Alright okay cool, thanks a lot! 🙂

So when you say peroxide, do you just mean standard cream peroxide? & [I know it varies a lot from person to person), but do you know long roughly you would need to leave the peroxide in?

WickedPixie is a pro :D... but I thought I'd add a comment in case it is applicable.

Do you think you have any traces of dye in your hair at the moment, i.e., do you think it would be worth trying a colour remover or some fading treatments before bleaching?  I'd say you'll definitely need to bleach, but if you remove all traces of colour, the bleach may not have any dye to work through before lightening your hair.  Although if may not make too much of a difference if you think most of your red dye has been washed out.

Definitely agree with the method of bleaching and yes, I'd say standard cream peroxide for hair lightening would do.  If it gives you any idea, I leave 20-volume peroxide (+ bleach) on my dark brown roots for about 25 minutes, and it lifts quite well, but roots are closest to your scalp, so the heat helps it to lift more quickly.

And I second the coconut oil, as everyone here would - sleeping with a light coat of coconut oil the night before I do roots seems to combat damage extremely well, if not completely.

Well I actually dyed my hair in summer! So all the dye has actually gone, but it's just left a faded stain. Actually a couple of months ago I tried removing it will a bottle 30vol liquid peroxide mixed with conditioner, but only left it in for a few mins but I could have sworn it made the red brighter! So yeah, I didn't know what to do about that, but I guessed its cause I didn't leave it in long enough and it was very dilute?

I know a couple of people who went to Sally's Beauty Supply and bought the bleach powder (Freeze Ice Lites Hi Lift Powder Lightener) and Creme Peroxide they recommended. However both of them ended up with really terribly dry damaged hair. I know they didn't use coconut oil, which I'm sure would have helped a lot, but I'm still worried about getting damaged hair from using the same method. Do you think it would have been the bleach powder that did the majority of the damage, and if so, what if I just used the peroxide on it's own?

Moderator combined posts.

Peroxide on it's own won't give you the amount of lift you are looking for.
The damage your friends suffered will have been caused by either higher volumes of peroxide being left on for too long or repeatedly bleaching the same hair. Sallys aren't  known for giving great advice.
If you are really worried about damage, go for the gradual lightening method. Dilute the bleach/peroxide mix with an equal amount of shampoo. This will only lighten a couple of shades at the most. Then you can deep condition your hair, and assess its condition before the next lightening session. If your hair feels too damaged at any point you can stop.
All lightening does cause some degree of damage. You have to physically raise the cuticle on your hair in order to remove the pigment molecules, so lightened hair is always more damaged than virgin hair, that is inevitable. It is possible to have reasonably healthy bleached hair though, with the right products and hair care routine. Bleached does not always equal fried lol.

Alright okay, thank you very much both of you! 🙂 I really appreciate the advice

Not sure yet if i'll gradually lighten my hair or do it all in one go, but I'm hoping using coconut oil and making sure I don't bleach it for too long will help limit the damage

I agree with everything said above, I also wanted to add if your hair lifts fast during your strand test you can absolutely get away with only using a 20 developer. Mine takes 20 minutes and my hair is naturally a bit darker and ashier than yours, but just like Alexia, I also do roots in 20 mins, so your whole head might take a bit longer. Lift until your hair is yellow then tone to a natural looking warm blonde.

I use powder bleach from Sally's and SalonCare 20 vol creme developer. Mix it all up, start timing, apply it to your midsections and lengths first, then your roots. Your roots will lift faster because of the heat from your head, so if you do your roots first, they will come out lighter than the rest of your head. 

I'm thinking you shouldn't have to use a color remover for the slight bit of red you have left. Since you're bleaching anyway, the bleach will just eat through the red quickly. I did it with a Manic Panic pink and the pink was totally gone, literally 5 minutes after I put the bleach on.

That's brilliant, thank you very much! You've been really helpful. I have a feeling my hair will lift quite easily, so I'm hoping I'll be able to use only 20vol