Because the cheapest fixes rarely get the loudest microphones. There’s no glossy ad campaign built around a spoonful of coconut oil or a leaf of aloe cut open on a kitchen counter, and that’s exactly why the advice gets buried under expensive nonsense.
But the body responds to consistency, not marketing. Keep the barrier supported, keep the area from drying into a brittle shell, and the lines around the lips stop looking so aggressive in the mirror. The final trap is that one common habit can wipe out the whole