Cellulite plagues many women looking for solutions to this unsightly issue. Cellfina , a new approach to tackling cellulite, may just be the answer. The FDA has approved Cellfina to last at least three years with no loss of benefit, which is the longest of any FDA-cleared treatment for cellulite. How Does Cellfina Work? According to the Mayo Clinic, cellulite is caused by fibrous bands of ...