There are some patients who develop a horizontal line above the eyebrow after the forehead is treated. The area immediately above the eyebrow is not treated in order to avoid drooping the eyebrow and along with it, the upper eyelid. If the lines were an inch above the eyebrow, or more, then they could be relaxed with a unit of Botox but when they are much lower, just a 1/4 inch or so above the eyebrow, I have found, using Belotero extremely superficially, as an off-label use, improvement with this filler for these lines. There are risks when any filler is injected around the eye so discuss it with your doctor.
Web reference: http://www.thenyac.com/belotero/index.html