What are the risks when reusing Empty Lip Gloss Tubes?

There are several potential risks when reusing Empty Lip Gloss Tubes, mainly including the following:
Bacterial Growth and Transmission: Lip gloss will come into contact with the lips during use, and bacteria, sebum, etc. on the lips may remain in the tube. If not cleaned thoroughly, these bacteria will grow in the tube and spread to the new lip gloss when used again, increasing the risk of infection and may cause skin problems such as dermatitis, acne or more serious infection. Chemical Reactions and Contamination: The residue of the old lip gloss may react chemically with the newly added lip gloss ingredients, causing the lip gloss to deteriorate or produce harmful substances. In addition, if the inside of the tube is not thoroughly cleaned, chemicals from the last cosmetics used may remain and mix with the newly added lip gloss, increasing the risk of skin contact with potentially harmful ingredients. Skin Irritation and Allergies: Residues or bacteria may cause skin allergic reactions, especially for people with sensitive skin or allergies. Even for people who are not sensitive to certain ingredients, the presence of bacteria and other microorganisms may cause skin discomfort or allergic reactions. Reduced cosmetic quality: Incomplete cleaning may result in residues in the tube that affect the color, texture and performance of the newly added lip gloss. This not only affects the appearance, but may also reduce the effectiveness of the cosmetics. Hygiene issues and social acceptance: From a hygiene perspective, reusing cosmetic containers may not be in line with the hygiene habits of most people. In addition, in some social occasions or cultures, reusing personal cosmetic containers may be considered indecent or unhygienic, which may affect personal image and others' evaluation of oneself. Therefore, when considering reusing Empty Lip Gloss Tubes, be sure to carefully assess the above risks and take appropriate cleaning and disinfection measures. For products with higher hygiene requirements, it is recommended to use brand new packaging containers to ensure safety and hygiene.