We're all aware of the rules around carrying liquids in hand luggage, but did you know there's a surprising item you're not allowed to take on board to the USA?

Thanks to new rules the Transport Security Administration brought in last year, there's a limit to the amount of powder (yep, think makeup setting powder) that can be brought into the cabin. So that's bad news for those with oily T-zones, then.

The TSA explain on their website (via Daily Express) that powder-based materials, such as milk powders or loose face powder, cannot be kept in hand luggage if they're over 350ml - 120z.

"If you are travelling from an international last-point-of-departure to the US, powder-based substances in carry-on baggage greater than 350ml or 12 ounces may require additional screening at the central checkpoint", they explain. "Powder-like substances over 12 oz. or 350ml in carry-on that cannot be resolved at the central checkpoint will not be allowed onto the cabin of the aircraft and will be disposed of.

The surprising item you can't take in hand luggage to the USApinterest
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"For your convenience, place powders in your checked bag. The measures have already been implemented at US airports nationwide to identify and prevent potentially dangerous items from being brought aboard the aircraft. There are no changes to what is allowed in carry-on baggage at US airport checkpoints."

The UK Foreign and Commonwealth Office continue, "Food items and powders in your hand luggage can obstruct images on x-ray machines.Your bags may need to be checked again manually by security. You can put these items in your hold luggage to minimise delays."

Laura Mercier Loose Setting Powder, Translucent

Laura Mercier Loose Setting Powder, Translucent

Laura Mercier Loose Setting Powder, Translucent

£32 at John Lewis

Considering the likes of Laura Mercier's Translucent Loose Setting Powder is 29g, and NARS' Light Reflecting Loose Setting Powder is 10g, reaching the limit shouldn't be too easy.

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