#1 Do not use petroleum jelly on burns.
It's a common mistake that Vaseline can be applied as an analgesic or antiseptic, but the truth is, Vaseline has no qualities that make it an effective way for burns. In fact, the moisture-barrier part of the jelly makes it a weak choice to use for fresh burns and cuts.
Vaseline does make a variety of different Intensive Care lotions which would be suitable to use on burns. Lubriderm and other types of lotion would be more proper.
#2 Use care when using Vaseline as a personal lubricant.
It's never appropriate to use Vaseline in tandem with latex condoms, because petroleum jelly actively dissolves latex, increasing the chances of a condom breaking. Always use water-soluble lubricants with latex condoms.
#3 Do not use Vaseline on new tattoos.
It's another very common misconception that tattoo artists will use and suggest that new tattoos be treated with Vaseline. This is false. Vaseline pull ink from new tattoos, clogs the pores, increasing the chances of a breakout that can ruin the new ink, and will not work to improve the healing of the tattoo.
#4 Do not use Vaseline as an acne cure.
Vaseline is not water-soluble, making it improper to use as a treatment for acne, or other skin conditions that are the result of oily skin. Vaseline actually seals the skin and dries it out, locking in dirt and suffocating the pores, but creates the impression of moisturizing because it softens and lessens chaffing.
#5 Do not use Vaseline as a moisturizer.
If you’ve been recommended to use a moisturizer by a dermatologist, use a moisturizing lotion, not Vaseline. If your skin is cleaned thoroughly before applying some Vaseline, it can be effective at locking in moisture, but it will not moisturize your skin. In fact, Vaseline creates a moisture barrier that keeps your skin from being able to breathe, which can exacerbate your skin problems.
#6 Do not use Vaseline as an anti-fungal.
Vaseline locks in moisture, making it extremely ineffective at battling fungus. Instead, use something that has actual anti-fungal properties, like coconut oil.