What is Eosin and where is it found?
This compound is an acid red dye. It is used in textile dying, ink coloring, lipsticks and as a coloring agent in nail polish, wool silk and paper. It is approved by the FDA for use in drugs, cosmetics and as topical low-concentrate antiseptics. Further research may identify additional product or industrial usages of this chemical.

What else is  Eosin called?
This chemical can be identified by different names, including:
Bromeosin, Fluorescein, Fluoresceine, Fluorescent Dye, Resorcinolphthalein

How safe is it?

Hang tight. We're thinking.