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Can you sleep and leave diffusers on all night?

diffuser at night

Can you sleep with a diffuser on? Can I leave my diffuser on all night? These are questions that you may not have considered, but that some of us who own an oil diffuser have been wondering about for quite some time.

Why wouldn’t I want a pleasant aroma of essential oils to fill my home while I sleep? It’s the nicest feeling in the world; it keeps me and my family calm while also relieving tension.


So, can you sleep with an essential oil or aromatherapy diffuser on? Yes, most oil diffusers have an auto shut off feature, similar to our home diffusers, which have timers of 60, 120, and 180 minutes. This way, you won’t have to get out of bed in the middle of the night to turn it off.

What happens if you leave a diffuser on? Because of its safety features, the diffuser will automatically turn off regardless of the initial configuration. Oil diffusers are equipped with both a water level sensor or a timer that may be set to turn off. A diffuser will most likely shut itself off on its own if I leave it on all the time. This means I don’t have to worry about it running out of water or getting too hot.

What happens if you put too much essential oil in diffuser?

Can you put too many drops of essential oil in a diffuser? You can put in as little or as much as you’d like. It can also fully depend on three factors: the sort of equipment you have, the type of oils you use, and how much strength of smell you want to disperse. A decent rule of thumb is to use 2 to 3 drops of essential oils per 100 ml of water.

When I’ve asked this same question to three of the most well-known aromatherapy companies, they all say the same thing: it depends on how strong you want it to be. The only time you need to use a certain number of drops is when you are trying to make a new combination of scents.

From what I’ve learned about essential oils in the past, some of them can be too strong for us. The smell can last for longer than you want.Also, the citrus essential oils don’t smell as strong as other oils do.

If If you want to look at some specifics, I made a table for you below.

How many drops of essential oil in diffusers?

As a result of my extensive search and consultation with industry experts, I’ve come to the conclusion that the following ratio of oil to water in diffusers is the most reliable one.

No. of DropsBelow 100 ml diffuser100 ml diffuser200 ml diffuser300 ml diffuser400 ml diffuser500 ml diffuserOver 500 ml
2-3ApprovedApproved
4-6Approved
6-9Approved
8-12Approved
10-15Approved
12 and aboveApproved

As a general guideline, I stick to this table; however, if you want to compare the size of the bottle, for example, a 5 ml and 1 ml essential oil bottle, I will stick to 2-3 drops regardless of the size of the diffuser you have.

How long should you leave a diffuser on?

How long can you leave a diffuser on? You can leave it on for at least two hours; this will provide enough time for your room to have the relaxing scent you desire during the day or before bed.

Can I leave my diffuser light on all night? The light on your diffuser can stay on, because when the timer on your diffuser runs out, it will shut itself off. I’ve asked around, and most people do not leave their electric diffuser on overnight.That is, in fact, an excellent diffuser feature.

Where should a diffuser be placed in a bedroom?

The best place for your diffuser is on a safe and steady table. Ensure that neither your children nor your pets have access to it. I placed it on our floor, and my son kept pressing the buttons, even carrying it and attempting to empty the container.

It’s best to keep our children away from our diffusers; instead, enjoy the scent with your family and avoid any unnecessary incidents by ensuring that your diffuser is kept in a secure location.

Essential oil diffusers that can work overnight

Will my diffuser turn off automatically? Yes, and it should turn off automatically thanks to the built-in auto shut off. Diffusers offer a variety of timers that you can set and forget. This makes diffusing oils overnight quite simple and efficient for those of us who simply want to smell the scent of our essential oils and get a good night’s sleep.

If you’re not sure if your diffuser can work overnight, I have a few recommendations for you below.

Here are some essential oil diffusers that can work overnight, ranging in size from 100 ml to 500 ml

ASAKUKI Premium Essential Oil Diffuser, 500 ml

In addition to a 500ml water tank and seven different LED light colors, ASAKUKI’s essential oil diffuser has multiple mist nebulizer modes and a safety auto-switch to prevent it from overheating if the water runs out. Use it to improve the quality of your home’s air and atmosphere. Check price here

ASAKUKI Essential Oil Diffuser with Remote Control, 400 ml

This diffuser has a 400ml water tank that is easy to clean, seven different LED light colors, multiple mist diffuse modes, and also have a safety auto-switch that prevents it from overheating if water runs out. The diffuser can be mounted on the wall or the ceiling because of its ergonomic and compact design. Check price here

VOCOlinc Smart Cool Mist Aroma Diffuser, 300 ml

  • This mist diffuser features an ultra-quiet operation and comes with a 12-hour runtime and an automatic shut-off.
  • This product also has a built-in humidifier and a built-in flower bud design that allows you to customize the scent.
  • You can also remotely control the device using the VOCOlinc app.
    Check price here

Glass Aromatherapy Essential Oil Diffuser, 200 ml

  • This diffuser is designed to be a desktop aromatherapy humidifier.
  • You can use this diffuser as an aromatherapy diffuser.
  • It features an ultrasonic essential oil diffuser, that uses natural wood and hand blown glass materials, also you can set the running time to 4 hours /8 hours working mode then it will turn off automatically, and comes with a beautiful wood frame design.
    Check price here

Homeweeks Diffusers, 100ml Colorful Essential Oil Diffuser, 100 ml

Aromatherapy diffuser, humidifier, and nightlight all in one with the Homeweeks 100ml multipurpose portable diffuser. To ensure safety and peace of mind, this diffuser automatically shuts off when water/oil levels are too low or time is up. Check price here

You may also be interested to read: Can you use a diffuser as a humidifier?

Here are some essential oil diffusers that can operate overnight with a capacity of more than 500 ml

BlueHills Premium XL Essential Oil Diffuser, 4000 ml

  • In addition to its use in aromatherapy, this essential oil diffuser also serves as a humidifier thanks to its large design and high-quality materials.
  • It has a safety auto-switch that prevents overheating in the event that it runs out of water, it has a capacity of 135 ounces (more than a gallon, or 4000 ml) of water.
  • There are only two mist settings on standard diffusers: high and low and the mist can be adjusted from a low setting to a high one by turning a dial-knob.
    Check price here

BlueHills Premium XL Essential Oil Diffuser Aroma Humidifier, 3000 ml

It has a 3000 ML water tank, 7 LED light colors, and a variety of mist settings. In addition to its large capacity, the humidifier can run nonstop throughout the night. Once filled, it will run for 40 hours on low mist. When the water level drops below a certain level, the unit automatically shuts itself off. Check price here

BlueHills Large XL Essential Oil Diffuser, 2000 ml 

This essential oil diffuser’s large capacity and powerful 1000 watt power make it an excellent choice for homes of all sizes. It has an essential oil mist function for lavender that can be used to mask the odors of pets or smoking. The high mist output of a large-capacity humidifier allows it to run for up to 40 minutes on a single fill and has an auto shut-off. Check price here

Diffusing essential oils for overnight use

Leaving essential oil diffuser on overnight? Essential oil diffusers are a great way to wind down after a long day at work, but it’s important to know which oils are best for nighttime use. Here are the top three essential oils recommended by aromatherapists for nighttime use.

Lavender essential oil, this is one of the most popular essential oils that you can use to create a warm, and calm environment ideal for sleeping and resting.

Mandarin essential oil, It promotes the creation of an environment that relieves tension and alleviates sadness.

Patchouli essential oil, is one of the most highly recommended because it has a calming effect on the mind and also helps to alleviate nervous tensions.

Using my suggested number of drops per ml of water from the above table, or checking with your essential oil diffuser manufacturer, is the best way to get the correct oil to water ratio.


I hope you found this information useful, and remember to make your home smell good! 🙂

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