As per mandatory requirement notified by Transport Security Administration, U.S. Department of Homeland Security, effective 31 May 2018, carriage of powder like substances in Hand (Carry-on) Baggage by passengers travelling to destinations in USA is subject to the following conditions:

Powder like substances are described as fine dry particles produced by grinding, crushing or disintegration of solid substance (for eg. flour, sugar, ground coffee, spices, powdered milk (such as, baby formula), and cosmetics) including such powders in clumpy, grainy or compressed material forms.

Carriage of any Powder or Powder like substances, in Hand or Carry-on baggage:

1. 12oz (350ml) or larger is prohibited, except for the powders listed below:

Medically prescribed powder like substances, baby formula, and human remains 12oz (350ml) or larger may be transported in hand baggage in cabin of the aircraft. Such powders if carried in any sealed containers will be inspected for signs of alteration or tampering to the packaging (for example, breaks, cracks, or holes in the wrapping, protective cover, or seal) and if carried in containers that are unsealed or having signs of alteration or tampering will be inspected to ensure that the contents are consistent with the container / packaging.

Duty-free powder containers inside of a properly sealed Secure Tamper Evident Bag (STEB) may be allowed through the checkpoint and transported in the cabin of an aircraft.