How to make lip products last longer

I thought lip products were hard to use for a long time since they touch the lips directly, but I found out they sell things like this.

It is a disposable lip brush. Just like a cotton swab, it has a tip at the end of the stick for applying lip products. I keep cotton swabs and disposable lip brushes in a small case for easy use; it is so convenient, and I like that I don't have to worry about hygiene.

I bought it online along with cotton swabs and things like that.