if you guys are in Durham, there is an Indian market on University Drive in the little shopping strip behind the BB&T bank building. there is a mediterranean restaurant called saladalia at the end closest to the street. i've gotten amla powder and coconut oil from there in the past. i'll actually be doing an amla powder mask on my scalp as i do a neutral henna on my hair this weekend.

i also want to add that i don't pre-shampoo and condition my hair prior to doing a neutral henna. i think coating your hair prior with conditioner will prevent the henna from penetrating your hair. this may be why one or more of you have not gotten the results that most others here have.
"Dogs stink too, but I like dog stink." ~ rileyb