Aluminum materials ensure that Aluminum Cream Jar will not react chemically with cosmetics during long-term use?

Aluminum is a metal with relatively active chemical properties. However, in the atmospheric environment, aluminum easily reacts with oxygen and quickly forms a strong and dense aluminum oxide film on the surface. This oxide film is like a natural "protective clothing" with a thickness of about 50-100 angstroms. It has extremely high stability and can effectively prevent aluminum from further reacting with oxygen. Even in a molten state, the aluminum oxide film can still stick to its post and maintain its protective effect. This characteristic makes the aluminum material itself have excellent corrosion resistance in the atmospheric environment, laying a solid foundation for the aluminum paste bottle to not react chemically with cosmetics during long-term use.
Aluminum oxide film also has the unique property of acid and alkali duality. This means that it can show certain adaptability and stability when facing substances of different chemical properties. Although pure aluminum may be unstable in sulfuric acid, hydrochloric acid, alkali, salt and seawater, the aluminum oxide film on its surface is sufficient to resist the erosion of common ingredients in cosmetics in the specific and relatively mild use environment of cosmetics. Cosmetics usually contain a variety of ingredients such as water, oil, fragrance, preservatives, etc. These ingredients will not destroy the integrity of the aluminum oxide film under normal storage and use conditions, thereby ensuring the chemical inertness between the aluminum material and the cosmetics.
In the manufacturing process of Aluminum Cream Jar, the chemical stability of aluminum materials is utilized to the extreme. The bottle body of the aluminum paste bottle and key components such as the aluminum-plastic cover are all made of aluminum. As the direct container of cosmetics, the bottle body needs to be in contact with cosmetics for a long time, and the chemical stability of aluminum materials ensures that it will not react chemically with various ingredients in cosmetics, avoiding problems such as cosmetic deterioration, discoloration or the production of harmful substances caused by chemical reactions. The same is true for the aluminum-plastic cover. It not only plays a sealing role, but also because of the characteristics of aluminum materials, it will not react chemically with cosmetics, further ensuring the quality and safety of cosmetics.
In addition, the sealing design of the aluminum paste bottle is also one of the important factors to ensure that it does not react chemically with cosmetics. The tightly designed aluminum-plastic cover fits closely with the bottle body, forming an effective barrier to prevent cosmetics from leaking during transportation and storage. This design not only prevents cosmetics from coming into contact with harmful substances such as air, moisture, light, and bacteria, and reduces the risk of cosmetics deteriorating due to external factors, but also further reduces the possibility of aluminum materials reacting with substances other than cosmetics, thereby extending the shelf life of cosmetics in all directions and ensuring that the aluminum paste bottle can stably protect the cosmetics during long-term use.