The TSA has enacted a security notice that requires 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. For your convenience, we encourage you to place non-essential powders greater than 12 oz. in checked bags.
Important to note if you plan on packing protein powder or bringing back spices from your travels – you’re limited to 350 ml or about 12 oz (the size of a soda can).
If you want to avoid the hassle, limit your powder like contents to under 12 0z.