How to treat roommates' behavior of using their own lipstick all the time?

I think it is a very bad behavior for roommates to use their own lipstick all the time, because since lipstick is bought by others, we have been using other people's lipstick without paying a penny. Such behavior is immoral and will be hated by others.

Because there is a trend among girls nowadays, that is, even if they don't wear makeup, they should wear lipstick to make themselves look refreshed. Every girl will definitely have a lipstick to some extent, and now some very cheap and easy-to-use lipsticks are particularly popular with the student party. My own lipstick is very cheap and easy to use, and the price is really not very expensive. If my roommate keeps using my lipstick because he doesn't want to pay these tens of dollars, then I will definitely be particularly disgusted with this roommate. Because when you just bought lipstick, you can try it on your roommate. If she thinks it's useful, she can buy it herself, but if she doesn't buy it and keeps using your lipstick, then this roommate really has a problem as a person.

When we go to school, our family will definitely give us enough living expenses. Even if we scrimp and save, we can save dozens of dollars to buy our favorite lipstick. And you use someone else's lipstick. This person may have bought it for a long time. We should put ourselves in others' shoes. If a person keeps using your things, you will definitely be disgusted. So we should buy a lipstick for our own use within our own economic scope, or our living expenses really can't afford too much money to buy lipstick, so don't always use other people's lipsticks. If this is serious, the friendship between two people will be shattered.

Sometimes don't do to others what you don't want them to do to you. We are greedy and cheap, and we may be losing a beautiful friendship. So we can't take it for granted to use our roommates' things. Sometimes everything has to be measured.