What do you need to pay attention to the cotton swab

"Usually, if you bump a wound, you can buy a bag of cotton swabs in the drugstore and wipe it with alcohol. It will be fine in a few days. The wound hasn't been well in the past two months."
The Cotton Swab just bought from the drugstore has a shelf life of 2020. It can be used for a long time. The cotton ball appears yellow and green patches, and even turns black in some places. The wound is not very good. It must be this broken cotton swab.

There are non sterile cotton swabs in the pharmacy, which can't deal with the wound directly.

Buy a bag of clean cotton swabs, there will be no green spots in two days, cotton swabs also have fake?
Medical swabs can be divided into aseptic packaging and non aseptic packaging. Sterile Cotton Swab refers to the cotton swab that is packaged after disinfection or chemical disinfection; Sterile cotton swab refers to the cotton swab that has not been disinfected. It is the medical supplies used for treatment after disinfection in medical institutions. According to the cotton swab Mr. Zhang bought, it should be non sterile cotton swab.

The non sterile cotton swabs bought from pharmacies are not all "Medical Cotton Swabs". They can only be regarded as "life cotton swabs". They can be used to clean the skin and ears, but not for wound treatment. Wang Huasheng told reporters that the sterile cotton swab bought from the drugstore does not have the disinfection equipment and conditions of the hospital. If it is directly used in wound treatment, it is likely that Mr. Zhang's wound infection will appear, which has been unable to be cured.

The sterile cotton swab is "bacteria" when it is opened and should be thrown away over 12 hours
In addition to the words "medical cotton swab", these sterile cotton swabs are also printed with the words "sterile grade", sterilization methods and instructions, while the non sterile cotton swabs are wrapped with the words "medical cotton swab" or "cotton swab".
For the bought cotton swabs with mold infection, the cotton swabs are not disinfected after opening the package. In the humid environment in summer, it is very easy to breed bacteria, leading to mold infection.
Sterile cotton swabs can be directly used to treat wounds after opening bags. However, it is difficult for ordinary families to use them all at once after purchasing medical cotton swabs. Therefore, the cotton swabs should be placed in a cool and dry environment after opening bags to avoid damp and "mildew".