My next door neighbor in Bangkok Thailand used to be a young lady that was always nicely put together and very stylish. She hung laundry out to dry frequently and used this green carousel for various items. The shower caps amazed me since I never use them and would never think to dry them for reuse. If I did ever use one, I think it would be going in the trash after that.
I read a post on one of the groups I am in for Thailand speaking about the many showers Thai people take throughout each day. The original poster was a man who had just moved in with his Thai girlfriend to find she took four or more showers each day. These were in the morning, at lunchtime, upon arrival home from anywhere, and before bed. If they had sex, she insisted on showers for both of them before and after.
The post got busy with many other people chiming in to say this was not unusual and mentioned shower