@northwind there was a thread on here about that ages ago, i think JL use a much higher content of silicon* hence the slightly higher price…
This is an Interweb Fact- but supposedly it’s a commercially available product used by glaziers, with a different label on it. Not that fussed tbh! Main thing is just how well it works and I’ve still not seen any definite difference between it and my cheap Halfords silicon.
I use the Fork Juice though because it smells nicer and it feels right 😉 Think the exact same is true of Brunox which I also use, though mainly because it comes in a convenient tiny can.