"Mica, Titanium Dioxide, Zinc Oxide. Iron Oxides, Manganese , Ultramarines"

And you could easily get poisoned by any one of these heavy metals... also just because something is natural doesn't mean it's safe. Cobra venom is natural too, but deadly... so you get the picture...

A lot of people, esp in the US, get poisoning each year from vitamin overdoses for the same reason. People think "all natural" means that it's safe to use, regardless of dosing. The vitamins are often fat soluble and the concentration in the body increases, without being excreted, resulting in toxicity...

Sadly, I don't think this mineral stuff is meant for trace consumption (in charanamrita), unless it is marketed as "non-toxic." So be careful!

I personally like to use the regular tilak, which is white or yellowish colored. You can always color it with saffron, and it makes for a very Brajvasi look, esp for shilas. Plus, it's edible in charanamrita. The colored varieties, I can't vouch for.

I have used the colored varieties from Vrindavan on Radha Gopivallabha, and They looked beautiful. On marble deities, the colors of the tilak are even more striking. Radha Gopivallabha's charanamrita isn't collected for the congregation. The charanamrita from the small Radha Krsna deities is collected and distributed, so this seemed ok...