Must be relaxing in all the right ways from the descriptions I've read in trip reports. Thnx for the info.
Tried once, was 16 and a girl known on the same night offered it to me.
After i took it she told me "now you're ready for anal".
Got quite disapponted when i realized it wasn't an offer.
Anyway, it's more like a pressure fall than what i would consider relaxing from my experience.
It's highly chemical btw, just googled and found the name of the substance (in italian).