Yes, liquid hand soap can be used for handwashing dishes in a pinch, but it's not the most ideal or effective option. Hand soap is designed for use on the skin and typically contains moisturizers and other ingredients that are gentle on the hands but not necessarily optimized for cutting through grease and grime on dishes.
Using liquid hand soap for dishwashing may struggle to remove tough residues, oils, and baked-on food particles efficiently. It may also produce fewer suds than dishwashing soap, which can make it harder to gauge if you've applied enough soap for effective cleaning.
If you find yourself without dishwashing soap and need to wash dishes by hand, it's better to use something specifically designed for that purpose, such as dishwashing liquid or dish soap. These products are formulated with stronger cleaning agents and degreasers, making them more effective at removing food residues and grease from dishes.
If you must use hand soap, try to find one that is free of added moisturizers or scents, as these could leave a residue on the dishes. Remember that hand soap is a temporary solution and not a long-term replacement for proper dishwashing liquid or dish soap.