Note oil based lubes can and do wash off in the hot(soapy) water in the shower, they then cool and stick to anything colder, IE the bath or shower tray, so you have lube with water on top making a very (dangerous) slippery surface that stays slippery for days, especially if others use the same shower and may not be aware the "floor" could be really slippery?
My advice don't use in the shower etc.