Lays down color dry and soaks up oil, so it finishes a base rather than starting one.
Also called: pressed powder, loose powder
Measurement
Open-jar symbol often reads 12M to 24M
The basics
What to know about powder
Powder combines pigment with absorbent fillers such as silica, starch, mica or kaolin clay, which take up oil as they sit. Pressed powder is that blend compacted into a pan with a binder, so it travels in a bag and touches up without spilling. Loose powder stays uncompressed, which is why it blurs the finest and why a light hand matters. A loaded brush drops far more than skin can take.
Grip decides the result. Over a liquid or cream base, powder fuses with the film underneath and locks it for hours. Over bare dry skin it has nothing to bind to, so it sits on the surface and settles into every flake and line. Press it in with a puff where you want it to last. Sweep it with a brush where you only want a veil, then stop. Past two passes, powder starts reading as makeup rather than as skin.
Longevity on the shelf is the reward. With no water in the formula, powder needs little preservative. It often carries an 18 to 24 month period after opening, longer than any liquid in the same line. Watch two things anyway. Powders containing titanium dioxide or zinc oxide bounce camera flash and can leave a white cast in photographs, so test under a flash before an event. Airport security also treats powders above 12 ounces as a separate screening item in carry-on baggage.
In photos
Powder on real products
See this option on different products. Open a photo for a larger view, or select the name to read its guide.