Where is the incision for the TBL? Is it only on the temples or does it go across the forehead? Does it leave a visible scar? Does it reduce the appearance of forehead vertical (including frown lines) and horizontal wrinkles? How often does permanent hair loss occur after TBL? Is there a RISK OF BLINDNESS or other eye problems? Can it cause permanent nerve damage and lead to chronic pain? Can I have a forehead reduction surgery in the future after a TBL?