I'm 15 and I've been overweight most of my life. This past year I lost 50 pounds and I have some extra skin on my body because I was big for so long. It's been tightening up (slowly) because I'm still young. But can I speed it up? I already work out (cardio) every other day. – Misha*
Congratulations on losing the extra weight!
Losing a lot of weight can leave a person with saggy skin, especially if weight comes off quickly. Unfortunately, there's no magic lotion or cream that can get rid of extra skin after weight loss. You should keep seeing improvement, but you may need to give it more time. As you said, being young is definitely in your favor, but you can't speed up the process.
Talk to your doctor if you're concerned about extra skin. Some people who lose very large amounts of weight (100 pounds or more) may consider plastic surgery after they've kept the weight off for a while.
Besides talking to your doctor, keep taking good care of yourself: Eating right, getting exercise, and caring for your skin can help you look and feel good.