Huge line down my forehead. Is there a fix? (Photo)

This is an easy fix with combination therapy of Botox or Dysport to calm the muscles down and a filler product such as Juvederm or Restylane.  Be wary of inexperienced providers in this area!  There are some very serious issues that can arise from fillers in this region.  Look for Board Certified Plastic Surgeons, Facial Plastic Surgeons or Dermatologists with lots of experience using these products.  Best Wishes!!

Hi,
That line is formed by the frown muscles - the corrugators. These muscles pull the eyebrows together and down causing this vertical line. They are best treated with botox/dysport which relaxes the muscle. In your case, a soft filler may also be necessary to soften that deep crease. Injecting filler in this area takes expert knowledge of anatomy around the eye so I highly recommend seeing a plastic surgeon to address your concerns.
All the best, 
Mehdi Sina, MD