Can I get forehead reduction surgery after a hair transplant?

Forehead advancement surgery is possible after a hair transplant surgery but you need to see a doctor to see if you are a candidate and if your goals can be met.

Assuming you have a reasonably mobile/flexible scalp, the in fact hairline lowering surgery can potentially be an effective way to lower what is now for sure a permanent (transplanted) hairline, reducing the forehead height.

I need to see photos of you to give an informed answer.I rarely do transplants for this asa Forehead reduction with orbital bone contouring and with or without a Browlift can be done together! Having done more than a thousand of these without a noticeable scar my TG patients rarely want grafts.

Yes, you can do a forehead reduction after hair transplants. The transplants can be  preserved or removed if you're not satisfied with the appearance of your grafts. I've used both approaches when I've seen females or TG male to female patients.

I am not sure why, when you had a hair transplant, you didn't address the forehead issue as it was the best time to do so with an extension of the hair transplant to reduce your forehead. Your risk is that a hairline lowering surgery might further accelerate the genetic hair loss, so consider a hair transplant to do what you want rather than a hairline advancement surgery