Can you bring powder in a carry-on? TSA 12 oz powder rule
The short answer
Yes. TSA allows powders in carry-on and checked bags. Powder-like substances greater than 12 oz (350 mL) must go in a separate bin for X-ray screening and may need extra screening, including opening the container.
The 12 oz rule
TSA says powder-like substances greater than 12 oz (350 mL) must be placed in a separate bin for X-ray screening. They may require additional screening, and containers may need to be opened.
Which items
TSA gives the same wording for baby powder, powder makeup and protein or energy powders. All three are listed as allowed in both carry-on and checked bags.
Advice from TSA
For your convenience, TSA encourages you to place non-essential powders greater than 12 oz in checked bags.
Other items
TSA says officers may tell travelers to separate items from carry-on bags, such as foods, powders and anything that can clutter bags and block clear X-ray images. TSA encourages uncluttered carry-on bags. The final decision always rests with the TSA officer at the checkpoint.
Sources: TSA: Baby Powder, TSA: Powder Makeup, TSA: Protein or Energy Powders. Read 5 November 2026. Rules and fees change, so check the official page before you travel.
Frequently asked questions
Can I bring baby powder in my carry-on?
Yes. TSA lists baby powder as allowed in carry-on and checked bags. If over 12 oz (350 mL) it goes in a separate bin.
What happens to powders over 12 oz?
TSA says they go in a separate bin for X-ray screening and may need extra screening or opening.
Is protein powder allowed?
Yes. TSA lists protein or energy powders as allowed in carry-on and checked bags, with the 12 oz rule.
Should I check my powders?
TSA encourages you to place non-essential powders over 12 oz in checked bags.