People who are prone to yeast infections, and anyone who currently has a yeast infection is advised to avoid personal lubricants with glycerin. Glycerin is a sugary liquid, and while there is no proof that glycerin will cause a yeast infection, lubricant manufacturers, and health conscious sex toy retailers recommend that you avoid lubricants with glycerin if you are prone to yeast infections.
Most water based lubricants do contain glycerin, but there are some brands that are glycerin free, including:
All of the easily available silicone based lubricants are glycerin free, including popular brands such as:

