This haircolour is as good as professional Goldwell, Schwarzkopf, Matrix or Paul Mitchell. On a friend, I have used 6N and 7N, and on myself their Creme hair lightener (bleach). All 3 products had ZERO offensive smell. No burning, no irritation, no staining, no allergic reactions. The 6N and 7N have the BEST gray coverage...simply amazing. Even with daily washings for 3-4 weeks, the gray does not return (of course new gray grows), but the coloured gray stays coloured & does not turn brassy. ***The creme hair lightener lightened my level 4/5 hair to almost white. My dyed platinum hair was left shiny, somewhat soft, no breakage and full of body and good texture. I cannot recommend Age Beautiful enough!