What is the principle that lipstick does not touch the cup?

Generally speaking, lipstick pigment with more wax will last longer, and it may be less likely to stick to the cup in theory. However, only using wax to form a film to achieve the purpose of not sticking to the cup, its coating feeling and skin feeling are relatively poor, and the effect will not be particularly good. So lipstick adds a lot of paraffin, so it doesn't touch the cup.