As part of a broader security push last summer, the Transportation Security Administration began scrutinizing containers of powders in travelers’ carry-on luggage, and the TSA will soon ask foreign airports sending flights directly to the U.S. to do the same, USA Today reports.
The focus is on containers holding at least 350ml of powder – about the size of a can of soda. Last week, TSA and airlines started stepping up awareness efforts about the change, urging passengers to pack larger containers in checked luggage and remove smaller containers from carry-ons for screening, similar to the current guidance for liquids.