Is it possible to lower the hairline by half an inch?

If you are just looking to lower your hairline 1/2 inch I would most likely recommend a hair transplant vs a hairline reduction as the scarring and invasiveness is generally less. Its best to meet with a hair restoration surgeon that can evaluate your condition and give you recommendations based on their examination and your concerns.

When performed properly, forehead reduction surgery should result in a barely even perceptible scar. For patients that don't want any risk of a visible scar whatsoever, there are two options. The first is to use only hair transplantation, understanding that multiple sessions might be needed to achieve the best density. The second option is to perform a forehead reduction surgery, and if patients are concerned about any visible areas of the scar, to come back and perform a hair transplantation procedure as a secondary procedure to hide the scar and alter the hairline further if needed.Both are great options, and I have patients who choose either one depending on their personal preferences and goals.All the best,

Hairlines in both men and women can be lowered 1/2 inch.  Lowering a hairline will take a lot of grafts since you are building on zero density.  Your best move is to consult with a doctor.