Curious about hairline hair transplantation?

Since I have a wide forehead... I'm really interested in hairline hair transplantation.

The nickname I hear because of my broad forehead is also stressful.

My forehead is wide and even flat, so I really feel like there's no volume at all in my face.

Does hair transplantation improve a lot?

How is the satisfaction level after the procedure, and are there any side effects?

How much do you think the amount will be?