Vaseline Harbors Bacteria. As against popular belief, Vaseline may seem like a petri-dish that enhances the growth of microbes and bacteria increasing the risks of infections. The genitals, especially the vagina is delicate and a disruption in its pH can throw everything off balance. So, should you use Vaseline as lube? We won’t recommend it.
Not only is Vaseline (petroleum jelly) not good for you internally, ANY kind of oil is going to destroy and breakdown this dildo, because it isn't real silicone. If you want a relatively cheap lube, buy some J-Lube powder and make your own .
Vaseline isn’t an ideal lube for sex. However, it can be used if no better options are available. If you decide to use the thick jelly as lube, keep these factors in mind: It has staying power.
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Although people can use Vaseline as a sexual lubricant, it is not the best option. Vaseline can damage latex condoms, trap bacteria that can lead to an infection, and stain clothing and bedsheets.
Vaseline can also degrade the silicone commonly used to coat sex toys, so it is not recommended to be used as a lubricant with silicone vibrators, dildos or dilators either. Vaseline has been found to cause vaginal infections too.
The answer to that is “no.” You shouldn’t use Vaseline as a substitute for a personal lubricant. Vaseline helps moisturizes dry skin. The anus is usually dry. Vaseline may help you get it a little bit wet. But it isn’t made for that. Vaseline shouldn’t even go into the anus at all.
While you can technically use many substances as a personal lubricant, that doesn’t necessarily mean you should — and Vaseline is one that should not be used as a lube, whether for anal or vaginal sex.
Because of how hard it is to clean up vaseline can cause bacterial infections when used as lube, so it's best to avoid it. Generally a water based lube or silicone based lube would be my recommendation, but silicone based lube can erode silicone toys, so be careful when picking a lube for a toy.
Lovehoney’s Enjoy Water Lubricant is probably one of the best lubricants when it comes to quality and money value. It is simple, smooth, spreadable, and it has a pump for easy access. It does contain glycerin, however, so if your skin gets easily irritated during sex, you should definitely go with a glycerin-free lube.