RALEIGH, N.C.--(BUSINESS WIRE)--Merz Aesthetics, a division of Merz North America (US affiliate of the global Merz Pharma Group), announced today that they have begun commercial shipment of the Cellfina™ System to aesthetic practices in the U.S. market. Cellfina™ is the only FDA-cleared minimally invasive procedure clinically proven to improve the appearance of cellulite in the buttocks and thighs of adult females, for results that last at least two years, the longest duration cleared by the FDA.