In June 2018, the TSA set a new regulation on powdered items following a security incident.
Now, any powder 12 ounces and above in carry-on luggage is subject to additional security screening, including makeup, drink mixes, detergent, spices, coffee, baby powder, and protein powder.
Powder-like items under 12 ounces should be good to go, but you must still remove them from your carry-on and claim them. Remember that gunpowder is never allowed on any aircraft under any circumstances.

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