Another blonde dye over this one - help!

[OuiOuiMonAmi]

DD has medium brown hair and wants a light, cool-toned blonde section on the sides of her head/fringe. She used a home dye to lighten it (one that included a lightener but wasn't a bleach) and it's too ginger for her and not light enough.

She now wants to lighten it a few shades more and to get rid of the gingeriness. Is there any way of doing this with a home dye and not using straight-up beach?

The dye she used was a 10.1 which seems to be the right thing so not sure why it didn't work. 10 is one of the lightest blondes and the .1 means blue-toned, so it should have been be ashy and not red... so I've no idea what she could try now!

The lightest professional shade you can get as a tint is a 12, unsure if you can get tint as a 12 in a box colour. Bleach is your only option other than that or you could use an ash toner if you just wanted to get the yellow/orange out?

My dd wanted something very similar (the same?!). We used L'Oréal Preference Platinum Extreme Platinum Blonde. I worked out the proportions needed of each of the 3 'ingredients' and mixed up a small batch, so we can use the rest another time.

Thanks guys!