I've managed an adult store for 13 years so I'm very knowledgeable about the products we sell. You can certainly use both for anal but silicone would be best. The absolute best lubes for anal sex are going to be heavy grease-like lubes. Silicone is just about the slipperiest lube substance you'll find. Pjur Backdoor - This is most people's go to choice for anal sex lube. It contains the ingredients in Pjur.