How can you find the root cause with no experiments? And leaving them alone is different than finding the root cause, because leaving them alone is just treating it as a wound, and treating it as the root cause was the trauma to your lips.
And tons of people on here have just left their lips alone and let their bodies heal their lips and it didnt work. Theres just some things that our body cannot heal on its own, in fact there are A LOT of things.