And normally I do use a lip liner rather than concealer. The advantage of a concealer on the lip first would be if you wanted to wear a color that just wasn't showing true to shade for whatever reason. For example, with my skin undertone, any pinks always look more pink. I can sometimes neutralise that when I want to wear a pink and notnbave it look neon. A thin layer of foundationnor concealer on the lips does it and I don't notice a difference at all with the light weight mineral makeup that I use.