Whether or not a mini-brow lift versus Botox would benefit you is a question best asked directly to a Board Certified Plastic Surgeon. A mini-brow lift may not have the same outcome as Botox treatments. Botox works by paralyzing forehead muscles, muscles between the eyebrows, and the muscles that create laugh lines. A mini-brow lift may or may not address all such issues, and it’s possible you will still need Botox after surgery. That’s why a consult is the best course of action. During a consultation, the doctor will listen to your appearance goals and discuss with you which options will best achieve your goals.
Botox is very effective to reduce/eliminate wrinkling of the areas I mentioned above. And as you noted, Botox is done about every 3 months to maintain optimal results. However, the amount of a brow lift you can get from Botox is only about 3-4 millimeters of lift in the best case scenarios.
A mini-brow lift would be effective for getting rid of sagging, creasing, excess skin of the forehead, and a drooping brow. Visible results will be to a greater degree than Botox and are long-term. So you need to make decisions based on your individual situation. I recommend you meet with a Plastic Surgeon to discuss both of these options and develop a treatment plan based on your unique needs.