I've used Wella T18 twice with 20 developer and the yellow just wont come out, what should I do? - Quora
![Asked for blonde hair and they accidentally left the toner in too long and dyed it grey! 2 hours later and it was finally fixed and the colour I wanted. : r/Hair Asked for blonde hair and they accidentally left the toner in too long and dyed it grey! 2 hours later and it was finally fixed and the colour I wanted. : r/Hair](https://preview.redd.it/jh57az2e1roy.jpg?auto=webp&s=985e06dc06a5ee49dcba752a22635428f08282b8)
Asked for blonde hair and they accidentally left the toner in too long and dyed it grey! 2 hours later and it was finally fixed and the colour I wanted. : r/Hair
![Mistake No. 6: Leaving the bleach on too long, 8 Hair Bleaching Mistakes... and How to Avoid Them - (Page 7) Mistake No. 6: Leaving the bleach on too long, 8 Hair Bleaching Mistakes... and How to Avoid Them - (Page 7)](https://images.totalbeauty.com/content/photos/hair-bleaching-mistakes-7.jpg)