These days, the beauty and skin care market is flooded.  Cellulite creams are no different, and it can be very difficult to differentiate between all of the available products.  The best cellulite creams, however, tend to use at least one of several common ingredients.  Caffeine, for instance, is used to increase metabolism and blood flow.  Collagen is used to improve skin elasticity.  Retinoids (also used in acne medicine) are intended to improve skin repair and collagen production.    As you look for a product to try, make sure to read the ingredient list to look for one of these active ingredients.