I used gunge for the first time today. I had a really good time with it but it took forever to wash off me, is this normal? Did I mix it right?

Also how does everyone deal with its slippyness? I was sliding around everywhere lol

yep sounds normal. these plastic loofah/puff things are the best at getting the gunge off skin https://www.ebay.co.uk/itm/272185474482?ul_noapp=true

Yep.

I scrape most off with a blunt knife first, then use cheap shampoo rubbed , then start the water!

Great with a partner who is into knife play

I've heard that salt will break down the long-chain-polymer based gunges, but I'm no chemist and don't know which substances that would be.

Oh yes, especially the thicker varieties. Places it tends to get stuck and you may miss are behind your ears, around your neck and the back of your shins. Use a shower puff - or loofah, whatever you want to call them, or the jet setting if your shower head has one.