Green Sex is our regular column on sexual health and eco-friendly romance. Got a question? Need answers? Leave a comment below.

In an ideal world, your souffle would always rise, kids would be born potty trained, and dating would be a breeze. But let's face it, things don't always work the way they should. Take various aspects of sex, for example. Under certain circumstances natural lubrication may be limited or non-existent. Effects from one's environment (such as climate or humidity), stress (caused by work or relationship, say), and the mind-body itself (age, pregnancy) can affect this small but oh-so important element of getting it on.

So what's a girl to do when Mother Nature takes a break? There are a lot of different kinds of personal lubrication out there: silicone-based, oil-based, and water-based, as well as novelty stuff that claims to warm, cool, or massage. Since all those choices can be rather, er, over-stimulating, I'm breaking down the good, the bad, and the best options below, according to their eco-friendliness, safety, and satisfaction rating.