What are the brush bristles made from? April 23, 2021 13:49 The bristles are made from synthetic hair and are vegan friendly, the material is Polybutylene terephthalate (PBT) Related articles What testing do your ingredients go through (specifically titanium dioxide, iron oxides, zinc oxides, and mica)? What is your animal testing policy? Are your products vegan friendly? What is the best way to remove a sifter when refilling the foundation jar?