For tightening of the skin on the arms (upper arms for example) I recommend devices like the EndyMed. Its a pretty comfortable procedure and treatments can be repeated every 2 weeks. After a few treatments you should see some tightening of the skin. The beauty of this device is it can be used in all skin types and is non-invasive.
Thank you for your question. We use a variety of laser to treat loose skin including ThermiTight and Fractional CO2. It is best to get an in person evaluation with a board-certified dermatologist.