Hey food technicians! I recently found myself with allergic reaction because of coloring agents.
Later, I found that in my residental area, people are used cloths dyes for food products with non permitted limits.
However, I got slightly allergic reaction so I decided to write article about it.
If you are interested
https://letmakeitsimple.com/2020/06/13/what-is-food-coloring-and-how-harmful-to-your-health/