1. a person's name, or a mark representing it, as signed personally or by deputy, as in subscribing a letter or other document. 2. the act of signing a document. 3. Music. a sign or set of signs at the beginning of a staff to indicate the key or the time of a piece.
MAC Pigments. Contrary to popular belief, makeup does expire. MAC cosmetics are no exception. The majority of cosmetics expire in one year. However, there are certain cosmetics that expire in a few short months and certain cosmetics that last a lot longer than one year. The reason cosmetics have expiration dates is because over time bacteria builds up in them and when used they can cause infections, acne, and other nasty afflictions.
How long cosmetics are fresh? Shelf life of cosmetics depends on period after opening and production date. Period after opening (PAO). Some cosmetics should be used within a specified period of time after opening due to oxidation and microbiological factors. Their packaging has a drawing of an open jar, inside it there is a number representing the number of months. In this example it is 6 months of use after opening. Production date. Unused cosmetics also lose their freshness and become dry. According to EU law, the manufacturer has to put the expiration date only on cosmetics whose shelf life is less than 30 months. The most common periods of suitability for use from date of manufacture: Expiration dates may vary depending on the manufacturer.