I wiped my marble worktop with half a lemon just to make it shine: the next morning, when the light came in sideways, I understood what the juice had eaten away
A simple wipe with half a lemon revealed a hidden truth about marble: the citric acid didn’t clean the surface—it dissolved it. What looked fine under overhead lights became glaringly obvious in morning sunlight, exposing the chemistry and speed of acid etching that catches most homeowners by surprise.