Heavy eyebrows / shelf above eyebrows. Can this be fixed with more Botox? (Photo)

Thank you for your question, what you're describing is a relatively common side effect known as brow ptosis or a “heavy shelf,” which can occur when Botox affects the frontalis (forehead) muscle unevenly.

This happens when:

The upper frontalis is treated, but the lower portion is spared, causing the lower forehead muscles to remain active while the upper relaxes, leading to a shelf-like heaviness.

Or the glabella (between the brows) is treated more aggressively than the forehead, reducing upward pull and allowing the brows to descend.

Can more Botox fix it?
In some cases, yes—a strategic placement of a small amount of Botox above the outer brows can help lift the lateral brow by relaxing the muscles that pull it down (like the orbicularis oculi). However, this must be done very carefully, or it could worsen the issue.

Alternatively, should you wait it out?
If you're within the first few weeks of injection and the heaviness is not severe, it may be best to wait and monitor. Botox typically begins to wear off at 6–8 weeks, and full function usually returns within 3–4 months. If the heaviness is uncomfortable or affecting your confidence, a follow-up with your injector is recommended.

My advice:

See a board-certified dermatologist or experienced injector for an in-person evaluation.

Discuss a minor touch-up if appropriate.

Ensure that future treatments are more balanced to maintain a natural, lifted brow position.

This is correctable, and fortunately, temporary. You’re not alone in experiencing this!

I'm sorry you are unhappy with your Botox results. Botox effects will gradually fade over approximately three to four months. You will return to the look you had prior to treatment. Always see an expert injector for optimal results.

Thank you for posting your question here let me start by stating that my answer is based on the limited information and pictures provided. for a more detailed and bespoke plan please consult with a plastic surgeon in person.
adding more botox will unlikely take that area down especially if you already have no movement in it and you might risk dropping your eyebrows. The other issue is that the ridge that you are seeing could be the result of your bone having a ridge and not necessarily your muscle which I cannot tell just based on the pictures. If it is your muscle then over time and with regular botox injections it might weaken and attenuate but if it is your bone and it's bothering you then you can consult with a plastic surgeon who can potentially shave down the bone to give you a smoother transition.
I hope this helps, best of Luck!