I do once-monthly DIY BKTs with QOD Gold and have been doing so since Nov. 09. I also use BAG henna from mehandi.com without problems.

See my siggie.

Baby fine, honey & caramel hilites, 4a/3c now 2b w/DIY BKT & LOVIN' it.
Cowash-V05 Extra Body
L'oreal EP Moisture-Rinse-out
JFLVM
BRHG mix w/
KCCC/KCKT (winter)
Clean-smelling-hair freak washes EOD; dry w/bowl diffuser
Cassia+henna+grays=Gold-red hilites
~That you don't share my experiences/opinions doesn't invalidate them
I wondered if it tasted like a hot dog. ~Phoenix