Silver Glitter, Microfine
While the FDA doesn't formally permit polyester glitter in cosmetics, the issue is under review and so they allow it. For more information, read our faq: https://support.tkbtrading.com/hc/en-us/articles/360023616472-Glitter-in-Cosmetics.
This particular product is made with a cosmetic grade pigment. However that pigment is aluminum, for this reason, you may wish to avoid using it in any lip products.