One cause of the rippling effect of cellulite is fluid retention in the adipose tissue. There are clear signs of a fluid invasion in the connective fibers of the upper layers of skin, along with enlargement of individual fat cells. These retained fluids cause visible swelling of thighs, hips and abdomen, but the toxins they contain break down the all important collagen and elastin fibers that keep skin smooth and firm. In aging, these fibers begin to stiffen and lose their flexibility. The loss of firmness is hastened by swollen fat cells, accumulated fluids, toxins, impurities and poor blood circulation.