I saw this article
about a person who developed a 3D printer that can print any color of makeup (currently in eyeshadow or lipstick form) using normal printer ink, which they say is FDA-approved, but it doesn't go into more detail than that. I'm skeptical, so I wonder if you could tell me...
1: Is it true that normal printer ink is safe for cosmetic use? This seems too simple to be true.
2: I thought that even among approved cosmetic pigments, some are only approved for non-lip or non-eye application. If printer ink pigment IS safe for cosmetic use, would it still be safe for all applications?
3: What are the other potential limitations of desktop cosmetic production?