In the field of science and technology in the United States, there is an encyclopedia author who is famous for focusing on the field of calcium carbonate. She not only has profound background knowledge and experience accumulation in the field of chemistry, but also has won the love and respect of readers with her profound and simple question-and-answer method.
The shelf life of titanium dioxide, a compound often used in sunscreens and cosmetics, is essentially indefinite when stored properly. It's a very stable compound and doesn't break down or decompose on its own over time. It can lose effectiveness, however, if improperly stored. For example, exposure to moisture might cause clumping and reduce its effectiveness as a pigment. For best results, it should be stored in a dry, cool environment, away from direct sunlight.
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