Review (1/5): Not feasible.
This takes two people to use. They give you an assortment of eyebrow stencils to fill in with a 1" in diameter marker. But, in order to hold both ends of the stencil in place it requires both hands. Unless you're willing to first duct tape the marker to a wall and blindly move your forehead against it, you're out of luck. You can't fill in the fake eyebrows alone.