I personally love loreal platifiz, I can't comment on the Fudge product as I've never used it! I have always found loreal to be very good. I think there is a different ratio of bleach to peroxide to normal when using on the scalp though! It's something like 30 grams bleach to 100ml peroxide, but I can't be 100% sure! I have it written down somewhere for the rare occasions that I scalp bleach! I think as a rule 20 vol is recommended for on the scalp but you can use 30 vol on very dark hair if needed, never 40 vol though. X