I am a 20 year old male and I have recently lost a lot of weight. As a result, my skin is "loose" and sags in places. It's been about 6 months since I stopped losing weight and I'm not sure if my skin has firmed at all since then. My question is: since the skin is always shedding and growing, will it eventually grow to be firm again? If so, how long, and is there anything I can do to speed up the process?