Hi! I've been bleaching and dyeing my hair for years. Unfortunately, past mistakes when bleaching have led me to super damaged hair. I'm currently on the road back to healthier hair and going to dye my grown out roots again soon. I'm undecided on whether i should bleach with 20volume, leave for a couple of weeks and then go back over with 20 volume and toner to correct the yellow tint and get a desired colour? Or should i bleach once with 30? This is what i normally do but have found it leaves too much of a yellow tint even after toning my hair, and doesn't get the desired light shade. Which sounds safer/better? Thanks!
To be honest the answer is nearly always use a better bleach powder! What do you use now?