Thinking about putting mineral oil or baby oil in your smoke machine? Read this first, because for most machines the answer is neither.
Don’t put mineral oil or baby oil in a regular fog or “smoke” machine. Party smoke machines are water-based: they heat a fluid made of distilled water and glycol or glycerin, and oil can’t mix with it. In the heater, oil can scorch, clog the machine, create a fire risk and void the warranty.
Mineral-oil fluid belongs only in machines built for it, mainly oil-based hazers, and even then only the fluid their maker specifies. Below I explain why, and what to use instead.
What Is Mineral Oil?
Mineral oil is a clear, odorless oil refined from petroleum. It is used in skincare, as a lubricant and as a laxative.
In the fog and haze world, highly refined mineral oil is the base of some haze fluids. Those fluids are made for oil-based hazers, not for fog machines.
What Is Baby Oil?
Baby oil is mineral oil with fragrance added. In other words, it is the same oil plus perfume.
That added fragrance is one more reason to keep it out of any heated machine. Scented smoke can also bother people with asthma or allergies.
Why Neither Belongs in a Water-Based Fog Machine
- Oil and water don’t mix. Fog fluid is mostly distilled water, so oil separates and reaches the heater in concentrated drops.
- It can burn and clog. On the hot heat exchanger, oil can scorch, leave a sticky residue and block the fluid path.
- It’s a fire risk. Fog machine heaters aren’t designed for oil, and scorching oil makes real smoke, not fog.
- It isn’t harmless to breathe. Oil mist can irritate the lungs, and OSHA sets a workplace exposure limit for mineral oil mist.
- It voids the warranty. Makers like Chauvet and ADJ tell you to use only approved fluid in their machines.
Mixing baby oil with water doesn’t fix any of this. The oil just floats on top and still goes through the heater.
Where Mineral Oil Does Belong: Oil-Based Hazers
Some hazers are built to run on oil. They turn a special refined mineral-oil haze fluid into a very fine haze that hangs in the air for a long time.
Even these machines should only get the haze fluid their maker specifies, not drugstore mineral oil or baby oil. Never put haze oil in a fog machine, and never put water-based fluid in an oil hazer.
Learn more in our guides to haze machines vs fog machines and using haze fluid in a fog machine.
What About Car Smoke Leak Testers?
“Smoke machine” can also mean an automotive smoke tester, a tool mechanics use to find vacuum and EVAP leaks. That is a different tool, and many are designed to run on mineral oil or the maker’s own smoke fluid.
If that’s your machine, follow its manual for the fluid and use it in a ventilated space. Never use a leak tester or its fluid to make party fog.
What to Use in a Fog Machine Instead
A water-based fog machine needs water-based fog fluid made for fog machines. A good fluid gives you dense fog without the residue and risk of oil.
This is the fog fluid we recommend for most water-based machines:
FogWorx Extreme High Density Fog Juice
Product Benefits:
- Premium Quality: FogWorx offers a quart of high-quality, water-based fog machine fluid that stays clean, dry, and odorless.
- High Density, Long Lasting: Our high-density formula ensures excellent dispersion and hang time, giving you long-lasting fog output.
- Universal Compatibility: Designed for any water-based fog machine, optimizing performance even in machines with as low as 400 watts.
- Versatile Applications: Ideal for lighting enhancements, night clubs, parties, and mobile DJs. FogWorx fluid is proudly made in the USA using pharmaceutical-grade chemicals.
Our guide to what liquid is used in fog machines explains the main fluid types. If you’d like to mix your own, see can you use water in a fog machine for a distilled water and glycerin recipe, but check your manual first, since homemade fluid can void the warranty.
What If You Already Put Oil in Your Fog Machine?
Turn it off, unplug it and let it cool completely. Don’t try to “burn off” the oil by running it, since that risks smoke, a clogged heater or a fire.
Drain the tank, then check the manual or contact the maker for cleaning advice. If oil reached the heater, the machine may need professional service or replacing.
Mineral Oil vs. Baby Oil for Smoke Machine FAQs
Can I use mineral oil in a smoke machine?
Not in a regular water-based fog machine. Mineral-oil fluid is only for machines built for it, such as oil-based hazers, and only the fluid their maker specifies.
Can I use baby oil in a smoke machine?
No. Baby oil is mineral oil with fragrance, so it has the same problems plus a perfume that can bother people with asthma or allergies.
Can I mix baby oil and water for a smoke machine?
No. Oil and water don’t mix, so the oil floats and still goes through the heater, where it can scorch and clog the machine.
Is there baby oil smoke fluid?
No. Use the fog or haze fluid your machine’s maker recommends.
What is the best fluid for a smoke machine?
The one your machine’s manual specifies. For most party fog machines, that is a water-based fog fluid made for fog machines.
Final Thoughts
Neither mineral oil nor baby oil belongs in a water-based fog machine, and mixing oil with water won’t make it safe. Use water-based fog fluid made for your machine.
Mineral-oil fluid is only for machines built for it, like oil-based hazers, and even then only the maker’s fluid. When in doubt, check your manual.
Please be careful and use at your own risk
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