I am a lover of henna and use it for my hair coloring and treatment frequently. I normally buy packed leaf powder products in Little India and apply by myself at home.
So far I try to pick up the products that are seemingly natural and contain no chemical stuff based on looks and smells, but I am still worried about the artificial color powders or additives mixed in the leaves. That seems to be quite common even if the packages say “this product is 100% natural”