I want to go around with my forehead exposed.

The weather has gotten hotter lately, so I often sweep my bangs back or wear a baseball cap. However, whenever I do, I am self-conscious because the line of my forehead visible from the side looks too plain and flat.

Because the center of my forehead looks particularly flat and sunken, my face lacks dimension. When I take profile photos, the line from my forehead to my nose looks uneven and sunken, which keeps catching my eye. Even applying a generous amount of highlighter creates an optical illusion; since my natural volume is lacking, I feel there is a limit to how much I can cover it up with makeup.

It feels stifling to keep covering my forehead with my bangs, and now I want to show off my forehead for a refreshing look. I’d like to get forehead fillers, which are said to add natural volume. What are the reviews like for those who have had it done?