I read somewhere that sprinkling detergent onto a painted model, then adding small amounts of water, you get a weathering affect. I'm using a tide detergent stick, testing...see what happens.

This is the result.
I never used a protective layer, If I did I imagine it would have looked better.
I added small amounts of tide to the tank around some spots, let it sit, then added small amounts of water...sty-piled with stiff brush. Paint peeled nicely.Ignore that nasty weld !! lol

This is a TIDE Stick, its liquid detergent inside.

Interesting results for extreme weathering! Wonder if it would also lift off Future if it was used as a barrier. Wouldn't want to weather right down to bare plastic!

even ordinairy dish washing soap does the trick I found out by accident whilst cleaning a painted model, it makes the colour much lighter.

If my memory serves me right , laundry soap has lye or is quite aggressive , that's why if you leave a leaking container of liquid soap on any metal surfaces and there is some spill on the outside it will eat right through the appliance paint and rust the metal under neat . It's a chemical reaction that's going on . Now the question is how do you neutralize it , it will be working until all the lye or chemicals are finally weaken .

There is a very scientific process that is known as " the solution to pollution is dilution".....

I may try dishsoap next. By the way, that model was primed with enamel & lifecolor acrylics was used.
It ate through both, to the plastic lol. Not sure if it would eat thru lacquer but, probably. Future , can someone try it? I don't have any. I'm looking for a peeling effect, which , "i did obtain" . But, detergent seems to be too strong for enamel & acrylics. Need to use enamel & a barrier + top coats. Maybe automotive polyurethane lol. Get a blast of isocyanates.
I'm an idustrial protective coatings applicator by trade, so painting is my life. Maybe prime the lady with zinc !