I tried every gadget and gimmick sold to unsuspecting consumers who are in pain from rounded shoulders. I have braces in several designs and sizes. I took the brace to conferences and any time I flew to attend meetings. They helped sometimes, but not all the time and never for long.
Deep heating lotions were nice, but did not provide any long term relief. I took it along in travel and used it especially the blue stuff. Nothing seemed to give me long term relief. I was surviving using gadgets, lotions, and Excedrin.
I even bought a worthless gadget that went on my back to remind me to sit up straight. What a waste!
No braces, no lotions, no Excedrin, and pain free!