Hi everyone, looking for some advice please, full head foiled a client yesterday, bleach 3% at the back and 6% at sides and top, normally perfect. Think the bottle of peroxide for sides and top had oxidised and only got to level 8 lift (rest of hair was clean 10. Having to redo and was wondering if I could use 1.9% instead of 3%? Never had this happen so I’m terrified I cause loads of damage, any help would be greatly appreciated. Thank you x