Ultherapy is a process which tightens the dermal tissue by forcing new collagen and collagen remodeling which has the effect of lifting and tightening.
Since most smile lines and frown lines are a consequence of muscle activity and/or age-related collagen and fat loss, the most useful treatment is an injectable: Either Botox or Dysport to inhibit the line-causing muscle activity which is the case with frown lines and crows feet - or with the case of facial lines, an injectable to replace or stimulate collagen.
If your brow has dropped, then Ultherapy might be a good choice. (See your doctor for an assessment. Ulthera's ultrasound treatment is not surgery and can't give the same major uplift that a brow lift produces).
Botox and Dysport both are great for getting rid of, or softening, frown lines and worry lines as well as crows feet.
Web reference: http://www.rebeccafitzgeraldmd.com/ultherapy-lift.html