How odd.
Did you have oil/lotion that you had just rubbed into your hands?



I think it's funny how Henna stains differently on different people. It's usually a tan color on my boyfriend when I practice on him, but when I do my own self, it's always super dark brown. Even on our faces. My face gets stained dark, you can't even see anything on his face. And this is always using the same mix, and usually I do him first, so his stays on longer.

So bizarre.

There are times in your life when you may not get any good stains.
It is great you know the henna you are using is good , but if you are having hormonal issues it may change your staining ability.
If you are pregnant, breastfeeding,or stopping breast feeding, all of these may have some bearing on the henna stain.
Medications will do the same.
There are so many variables it is hard to know what could be the reason. Parafin dip for hands and feet will also create a barrier for henna stain. As will sunscreen and who knows what else.
good luck figuring out this puzzle
Flavia