Cassia Henna mix with amla. Ratio?

[MeMyselfandI]

I have decided to try a cassia:Henna mix. I want to add some amla.

I am trying to figure out how much amla to add.

In a cup of final powder, should I add a small amount of amla?

Do a 1:1:1 ratio?

[Nightshade]

If you check out the henna link in my siggy, there's a pic in there of Pani's experiments and I think she has a 1:1:1 ratio in there :)