We live in a humid climate and the waterproof claim actually holds up in the shower without getting tacky. It's also been kind to my skin, which reacts to almost everything, so the hypoallergenic part really matters.
Finally found a lube that doesn't dry out halfway through, this silicone one stayed slick for a solid twenty minutes without needing to reapply. Been using it on my sensitive skin for a week with zero irritation, and the waterproof formula makes cleanup a breeze.