Does the hotel disposable shampoo have a production date?

There are instructions on the back of the disposable shampoo bag in the hotel. For example, check the limited use date on the label, that is, the expiration date. If the date of production is marked, it must be the date of production, followed by a few years of shelf life. If some shampoos don't have the production date written on them, you can also check their batch numbers.

The shelf life of unopened shampoo is usually about 2~3 years, and the shelf life after opening will be shortened by half a year to about one year according to the different storage environment. After the shampoo is opened, the active agent contained in the shampoo will be activated, which is a chemical agent to ensure the cleaning effect of the shampoo. If stored improperly, it is easy to lose its activity, resulting in the loss of cleaning effect of shampoo.