If you want your lips to look great under lipstick, it's very important to do a bit of prep work. A proper exfoliation will improve blood circulation in your lips and make them look younger. Your lips will also swell slightly and appear fuller.
Method 1: - Apply a lip conditioner or conditioning lip balm to your lips and let it stand for one to two minutes to let it soften the rough skin on the lips. Then use a clean baby toothbrush or some other soft bristle toothbrush and gently massage lips in a circular motion. This acts as an exfoliator and helps to condition your lips at the same time.
Method 2: - Use a natural lip scrub or lip exfoliator like e.l.f. lip exfoliator to exfoliate your lips. After you finish, apply a moisturizing lip butter or hydrating lip balm on the lips and let it stand for couple minutes before applying lipstick.