What skin tightening creams reduce man boobs?

None of them. Losing weight reduces man boobs - unless they are due to a hormonal problem, which is unusual but should be ruled out, especially if you are not overweight.

Related Questions

Do skin tightening creams help reduce man boobs?

No. "man boobs" are caused by excess tissue underneath the skin, not excess skin itself. Weight loss and a good exercise regimen will solve the problem in most cases. If it doesn't, there is an abnormal underlying problem going on that will need to be evaluated by your doctor. Read more...