Do logos on glasses last longer when washed by hand or in dishwasher?

I have a large glass collection with various logos, and would like the logos to last as long as possible, while still using the glasses for their intended purpose. This includes shot glasses. I have glassware from many different years, but most are probably after 1980 or so.





Is there a significant difference between washing by hand and washing in the dishwasher? Given the number of glasses I have, it's not as if I'm using the same glasses weekly, so that should increase the average life.





I've tried finding the answer among collectors, but nothing comes up online.Do logos on glasses last longer when washed by hand or in dishwasher?
I have shot glasses from the 1940s with silk screened designs, and those things have lasted and lasted through multiple times through the dishwasher. However, a set of glasses I picked up in the 1980s have faded to where the image can no longer be seen. I think a lot depends on the process used to put the designs on the glasses and how well they were fired on.





Your safest best to wash all your beer %26amp; shot glasses by hand, and let them air dry. What damage that is caused by running glasses through the dishwasher is usually tied into the extreme heat generated in the wash which can lead to fading AND the abrasiveness of the dishwasher detergent which can cause glassware to become cloudy over time.





Of course, hand washing makes your collection of glasses more prone to breakage, which is why you should always use a rubber sink mat inside the sink when washing glassware.