So who will this impact?
According to USA Today, the TSA will request foreign airports with non-stop flights to the U.S. to start taking a closer look at powders starting on June 30. That'll be everything from cosmetics to baby powder to protein or energy mixes.
The focus is on containers about the size of a can of soda. The main security concern is from improvised explosives, but the TSA is also concerned about powdery substances that might be a hazard, like fentanyl or pepper spray.
Passengers will be asked to pack larger containers in checked luggage and remove smaller ones from carry-on bags for separate screening.
TSA officials told USA Today this isn't a ban, but they gave this example, they don't want travelers returning with a large container of Moroccan spice in a carry-on bag rather than checked luggage and a checkpoint officer throws away the powder before the person boards the plane.
The best advice, just pack larger containers of powder in your checked luggage.