nope ...sort of gaining some type of mass to fill what has been lost, altho there is like non invasive surgerical procedures that "claim" to be able to make a difference after many treatments BUT look in to it cuz they all specify with 10 or so treatments that are in joint with different creams and elixers and even the most dramatic before/after pix are minimal difference and certainly not made for over 50lb loss... all just snake oils lol

if there was a pill cream oil device that tigten loose skin enough to make any actual difference, believe me the world would know about it fast and post partum moms would be the first ti hear of it and spread the word
the elastisity varies depending on one's age and genetics and to some degree the thinkness of the skin in the area..."At a certain point, the elasticity (the ability of skin to spring back), is damaged. If the weight gain continues, the stretching / pulling continues and finally all elasticity is gone. At this point, depending on the speed of weight gain, the the skin may start showing cracks ("Stretch Marks") - these are permanent through and through scar filled cracks in the skin which can never be erased". (Peter A. Aldea, MD )

you can make your skin appear more plum (so less saggy looking) by lotioning with lotion that has caffine or mint in it/ staying supper hydrated/ exfoliating regulary to suposidly stimulate the cell (lol sure)