I am wondering if forehead fillers help with wrinkles as well.

The center of my forehead is fine, but there are slightly sunken areas on both sides, so the curves become more pronounced when exposed to light. I want to wear my bangs up, but I haven't been able to easily try it because I am self-conscious about the shape of my forehead. I looked into forehead fillers and learned they are used to add volume; is it possible to treat these partially sunken areas? I am also curious if it can improve fine lines on the forehead. I understand that the shape of the forehead filler can vary depending on the injection site, so I would like to know how the design is determined before the procedure. Additionally, I am wondering if there is a higher likelihood of the filler showing through or creating visible lines if the forehead skin is on the thinner side. For someone like me who is concerned about the curves of my forehead, what specific points should be checked during a consultation for forehead fillers?