Hello Mikiee, Thanks for your question. Broad band Light is a rejuvenation treatment that works to globally rejuvenate the skin and make it healthier, more even, less blotchy, less pigmented and less red. We are basically reversing the age of your skin by promoting healthier skin cells and "turning on" youthful genes. There is a skin tightening aspect to the BBL but it would be targeting the texture and perhaps smoothing out the "crepey" skin. If you are looking at non-surgical approaches to treat arm fat, then CoolSculpting, Emsculpt NEO and Exilis Ultra are likely going to give you the results you desire. The most important first step is to consult with a clinic that has a lot of experience and one that offers more than one type of technologically so that the best protocol (possibly a combination of technologies) can be offered. Hope this helps! All the best, Manish Khanna, MD FRCPC