I'm not an expert by any means, but any lubricant that is oil based gives me infections. I have to have water-based ones. Whenever my master uses the karma-sutra oils, or any other oil product, on me he has to make sure it doesn't get to my "lower half". It's a real pain - but those infections are no fun. I don't know if men are as susceptible as women, though. But I'd recommend finding a water-based product you can afford. Ultra-glide is our favorite.