Five experts explain what double penetration is, what you need for it, how to prepare, and all of their tips and tricks.
@umbra21 - I read that same thing about the glycerin, so I checked labels carefully. Astroglide has at least one variety that does not contain glycerin. It even comes in a CVS brand that's cheaper! I think the problem with the glycerin is that it's basically a sugar. Sugar, either ...