When you put on weight adipocytes (fat cells) in your deeper, subcutaneous adipose tissue fill up with fat and that give you volume. Skin has to accommodate the excess volume by becoming longer. At the she time, adipocytes in your more superficial hypodermal adipose tissue also fill up with fat and we call that cellulite. When you lose weight you mainly lose fat from the subcutaneous adipose tissue and not so much from the hypodermal one…