Perhaps the most important trait of ID Millennium is that it will never get in the way. Easy to use, lasts forever, extremely easy cleanup. It is the best lubricant I have used so far for intercourse, masturbation, and toys.
The most helpful critical review
And...Pull a Houdini!
ID Millennium is one of the most peculiar silicone lubricants I have ever used. It really does never get sticky or oily, but it does a disappearing act very quickly. This makes it a good moisturizer and massage serum, but not a very good lubricant.