You do need the powder bleach sachets to mix with the 40vol developer! They are cheap and widely available

I made the same mistake 1st time cause the woman in the hair shop was basically an idiot - and nothing happened at all. Since then I got 5 powder bleach sachets (£1GBP each) and I've bleached and redyed 4 times, my hair feels like straw but I'm feeling more confident.

Jerry says TW is very good and without any other treatments it cut his levels in half.

He gave good advice about removing most other body hair because he will really hurt his skin putting all that strong bleach everywhere on thinner hair (my neck and scalp are very sore and dry/itchy, and it has been a week or so since the 4th treatment), I thought this when I read your post but Jerry has come up with a great solution with concentrating on underarm hair and not giving them much else to take.

Good luck !! Be sure to post results!