How would the dish soap not “attack” the pigments on the crockery not covered by gunk, do you need to make sure that the plate is covered in an even spread? It’s a desurficant, iirc, with hydrophobic molecules to get into molecular scale sized spaces. Maybe unvarnished crockery could lose the colour… But eating off that and washing it wouldn’t be the best choice either.
Also, most dishwashers instruct you to rinse the worst off in the sink before loading. And we’ve followed that and most of our china still has good colours, the one that doesn’t I know was left in direct sunlight for over a summer.
I’m going out on a limb and saying untrue.
How would the dish soap not “attack” the pigments on the crockery not covered by gunk, do you need to make sure that the plate is covered in an even spread? It’s a desurficant, iirc, with hydrophobic molecules to get into molecular scale sized spaces. Maybe unvarnished crockery could lose the colour… But eating off that and washing it wouldn’t be the best choice either.
Also, most dishwashers instruct you to rinse the worst off in the sink before loading. And we’ve followed that and most of our china still has good colours, the one that doesn’t I know was left in direct sunlight for over a summer.