Bimatoprost: Eye Drops vs Latisse

Hellooo, I’m considering buying bimatoprost but I’m a bit confused about the different application methods (eye drops vs. Latisse-style applicator).

From what I understand, using the eye drops directly might give stronger or faster results, but could also lead to uneven eyelash growth. On the other hand, the applicator method (like Latisse) is meant to be used only on the upper lash line, which confuses me because I’m interested in improving both upper and lower lashes.

Am I correct about this, or am I misunderstanding how these methods work? If the applicator is only for the upper lid, does it still affect the lower lashes indirectly, or is there a safe way to treat both?

Would appreciate any clarification or personal experiences.