Question Spot on my laptop touchpad not cleaning off

Feb 20, 2023
So my genius brother took the laptop to the bathroom while he showered. He probably didn't dry his hands properly and he used the touchpad while his hand still had a little bit of shower gel.

It eventually dried and left a shiny spot on the touchpad. It just doesn't come off, when you pass your fingers it feels like it can be scrapped off but it's also really embedded in there.

The touchpad still works normally when you move your finger through it, but it's still annoying to have this shiny spot that feels different from the rest. I've tried normal cleaning methods, alcohol, nothing works, any ideas on how to remove this?