Titanium Dioxide is used practically everywhere. Its the "white coloring" in paint, food,skincare, medicine,plastics,paper, coatings,inks,etc.
https://en.wikipedia.org/wiki/Titanium_dioxide
Strangely, they don't have to list the titanium dioxide in the ingredients.
Holding up a glass of grass fed cow milk to store bought milk really shows the difference. The store bought milk suddenly looks bleached white, like liquid paper.
Thats illegal, they have at least to mention "Artificial coloring"
Also it's only added to skim milk, ratacat post about industrial milk and whatever isn't true.