Botulinum toxin is mainly used to reduce wrinkles and fine lines by paralyzing the underlying muscles. Botox is frequently used on forehead lines, frown lines and crow’s feet (lines around the eye). It can also be used for chin and for the lip lines and corner of the mouth and neck. Botox is injected with a fine needle into specific muscles with only minor pain. Botox helps in controlling the movement of upper lip and reducing the pain correlate with teeth clenching.