Skin care products packaging learned the truth under the vacuum packing

Q1 cosmetics is equal to the sterile vacuum packing? The purpose of the vacuum is delay product deterioration. Cosmetics products into bottles, filling the gas through the machine, make a hotbed of bacteria survival. But is there bacteria enter to see cosmetics production and use of the preservation condition. Process of cosmetics is not a vacuum environment, so buy regular qualified cosmetics to ensure hygiene and safety. To avoid when using bacterial growth, raw material will begin to add preservatives, but if improperly stored or goes bad. Q2 how to judge whether cosmetics bacterium? Bacterial contamination of cosmetics is like expired cosmetics terrible, may cause long, or will cause fester, infection, especially has a great harm on the sensitivity of the skin. Cosmetics start turning yellow or pungent smell become, then explain products began to deteriorate, it will not be able to use again. Q3 vacuum packaging of cosmetics can really save longer? Vacuum oxygen reduction after the bottle, can prevent the oxidation of the ingredients, active, stable and inhibit microbes survive, so it can extend the storage time. But maintain article is liquid, can't like solid is completely pumping air into vacuum state, therefore to extend the time is limited.