Dear audrey1958:Looking at your photo, Botox dosage for treatment of your frown lines ranges between 20-30 units. Best wishes.
Thank you for your question and for submitting your photo. It's difficult to make exact recommendations without an in-person consultation, to assess your muscle strength and see your face with movement and animation. Generally speaking, I use doses between 16-24 units for most patients between the eyebrows to address the 11 lines - looking at your photos, you would likely benefit from a dose of at least 20 units to start. Botox is most effective for treating expression lines that are present with frowning/movement - deeper, etched lines that are present at rest often require a combination of Botox, laser skin resurfacing, and dermal fillers. I would recommend scheduling a consultation with a cosmetic dermatologist to discuss your concerns and to determine the best treatment plan for you. Best of luck!