How is forehead filler done, and how much is used?

Doctor's answer

Most foreheads have the two brow bones and the bone between the brows sticking out, so the area in between looks sunken. The goal is a forehead that flows smoothly from the brow line to the hairline in profile, so only the hollow parts are filled to refine the side view. The doctor stresses there is no need to overfill: filling so much that it sticks out past the glabella usually ends in regret and dissolving. It typically takes about 3–4 cc.

A summary of what the doctor explains in the video (in Korean). Results and recovery vary by individual; your treatment plan is decided in consultation.