Can you photoshop the hair transplant in advance?

I had a hair transplant done a few years back with a top doctor and am happy with the results. That said, I wish the hairline was a bit lower and straighter. I am considering getting another one to fix this. Right before my first procedure, I met with the doctor briefly to discuss where the hairline was going to be. I was surprised by how un-sophisticated this part was. He just drew a hairline on...

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