Sprays and liquid cosmetics on a plane
For departures from the United States, look at the product inside each container. An aerosol, a perfume bottle, a cream and a powder face different screening questions. Toiletry aerosols also have FAA quantity and nozzle protection limits, even when packed in checked baggage.
What goes in the liquids bag
TSA's ordinary carry-on limit is 3.4 oz or 100 ml per container for liquids, aerosols, gels, creams and pastes. Put spray deodorant, perfume and liquid makeup in the liquids bag. A solid deodorant stick is a different form. Read the container size before screening; a partly used oversized bottle still has an oversized container.
Toiletry aerosols in checked baggage
FAA's personal toiletry allowance includes hairspray, perfume, cologne and nail polish. Each container is limited to 0.5 kg or 500 ml, with a combined limit of 2 kg or 2 L per person. Protect aerosol buttons or nozzles with a cap so they cannot release in a bag. A technical or flammable spray does not automatically qualify as a toiletry; check its own rule before packing it.
Sort makeup by texture
Keep solid lipstick and powder eye shadow separate from liquids and creams. Mascara, cream blush, liquid foundation and gel eyeliner count toward the checkpoint liquids bag. In a manicure kit, assess nail polish, remover and tools separately. A product's texture matters more than the label on the makeup pouch.
Sources: TSA: What Can I Bring?, FAA PackSafe: medicinal and toiletry articles.