Allergan, Inc.’s wholly-owned subsidiary, Allergan Sales, LLC, and QLT USA, Inc., a wholly-owned subsidiary of QLT Inc. announced the completion of Allergan’s acquisition of QLT’s Aczone (dapsone) Gel 5% product, a topical treatment for acne.  “We are pleased with the opportunity to grow our franchise in medical dermatology where there is a continuous need for new treatment options and strong growth potential,” said David E.I. Pyott, Allergan’s chairman of the board and chief executive office...