Here’s one of the studies: https://www.sciencedirect.com/science/article/pii/S0091674922014774 https://www.sciencedirect.com/science/article/pii/S009167492...

Here’s one of the studies: https://www.sciencedirect.com/science/article/pii/S0091674922014774 https://www.sciencedirect.com/science/article/pii/S009167492... And here’s the ingredient list for a major brand of residential rinse aid: https://www.rbnainfo.com/product.php?productLineId=654 https://www.rbnainfo.com/product.php?productLineId=654 It sure looks like the same stuff. If you have low enough water hardness and TDS, then rinse aid serves no purpose and you can just not use it. Even with higher hardness, the main benefit is just aesthetic.