Wait for your skin to tighten on its own. This might sound counterintuitive, but for many people, the loose skin that hangs around their bellies or off their arms will slowly but surely shrink back to its original size and shape, or at least very close to it. It can take up to two years for your skin to naturally bounce back to its original size, according to Health Services at Columbia University, but waiting might just be worth it if it means avoiding costly and invasive surgery.
Maintain a healthy diet and exercise regimen. Eat a diet full of healthy foods like whole grains, vegetables, fruits and plenty of water. Take part in cardiovascular and strength training exercises to maintain your weight loss and to bulk up the muscles beneath the skin, which can help to make loose skin less pronounced.
Consult with a surgeon about cosmetic procedures to tighten your excess skin. A tummy tuck is common on the abdomen, if you have a large belt of skin from rapid weight loss, says the American Society of Plastic Surgeons. If your loose skin problems reside elsewhere on your body, contouring surgeries might be a better fit, wherein the skin of the breasts, thighs or arms are lifted and in some cases sections of skin are removed to give your body a tauter look.