
Room sprays are a great way to freshen up your home, and fragrance oils are an effective way to create your own. The amount of fragrance oil you use will depend on the strength of fragrance you want to achieve, as well as the size of your spray bottle. A typical room spray base recipe uses a 4 oz / 120 ml spray bottle, and you can add 20-40 drops of fragrance oil to this. However, some people prefer a stronger fragrance and will use a higher concentration of oil, such as 10%, 15% or even 18%.
| Characteristics | Values |
|---|---|
| Amount of fragrance oil | 20-40 drops |
| Amount of distilled water | Enough to fill 3/4 of the bottle |
| Amount of witch hazel | Enough to fill the rest of the bottle |
| Amount of perfumer's alcohol | 15% |
| Amount of Polysorbate 80 | 22% |
| Amount of Geogard (preservative) | 2% |
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What You'll Learn

How much fragrance oil to use in a 4 oz/120ml spray bottle
When making a room spray, the amount of fragrance oil you use will depend on the strength of fragrance you want to achieve. Many people make room sprays at 5% fragrance oil, but if you want a stronger scent, you can go up to 10% or even 15-18%.
For a 4 oz/120ml spray bottle, you will need to use a corresponding amount of fragrance oil to achieve your desired percentage. For example, for a 5% fragrance oil concentration, you would use 6ml of fragrance oil (4 oz x 0.05 = 0.2 oz, or 6ml).
It's important to keep in mind that using too much fragrance oil can affect the solubility of your mixture, making it viscous or cloudy. You also need to ensure that your final product stays under the VOC (volatile organic compound) limit of 18% for room sprays.
In addition to fragrance oil, your room spray will also contain other ingredients such as perfumer's alcohol, distilled water, and an emulsifier or cosolvent. You can adjust the amounts of these ingredients to achieve the desired concentration of fragrance oil.
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Using distilled water in room sprays
Distilled water is a key ingredient in room sprays, and the amount you use will depend on the strength of fragrance you want to achieve. A typical room spray base recipe uses a 4 oz / 120 ml spray bottle, with distilled water making up around 40% of the total volume.
To make a room spray, fill a glass spray bottle 3/4 of the way with distilled water. Then, add enough witch hazel to fill the rest of the bottle. Finally, add 20-40 drops of your chosen fragrance oil(s), replace the lid, and shake well.
It's important to note that the concentration of fragrance oil in a room spray can vary. Some people prefer a stronger scent and use a higher concentration of oil (up to 15-18%), while others opt for a more subtle fragrance at around 5%. The maximum concentration is listed in the IFRA document for your fragrance oil, and it's important not to exceed this for safety reasons.
When creating your own room spray, you may also need to consider the use of a dispersant, preservative, or emulsifier to ensure the final product is stable and effective.
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Using perfumer's alcohol in room sprays
When making a room spray, the amount of fragrance oil you use will depend on the size of your spray bottle and the strength of fragrance you want to achieve. A typical recipe for a 4 oz / 120 ml spray bottle will include 20-40 drops of fragrance oil, but you can adjust this amount to suit your preferences.
If you're using perfumers alcohol in your room spray, there are a few things to keep in mind. Firstly, perfumers alcohol is less dense than water, so you'll need to adjust your measurements accordingly. A good starting point is to mix your fragrance oil with perfumers alcohol at a ratio of 1:1, but you can adjust this depending on the strength of fragrance you're aiming for. For a stronger fragrance, you can increase the amount of fragrance oil relative to the alcohol.
When creating a room spray with perfumers alcohol, it's important to follow safety guidelines. The International Fragrance Association (IFRA) provides maximum concentration guidelines for fragrance oils used in various products, including room sprays. While the maximum concentration for air fresheners is often higher than what you would typically use, it's important to stay within safe limits. You can also add a dispersant and a preservative to your room spray to ensure its effectiveness and longevity.
In addition to fragrance oil and perfumers alcohol, your room spray may require additional ingredients such as distilled water and an emulsifier or cosolvent. These ingredients help to solubilize the fragrance and alcohol, ensuring a consistent and stable mixture. It's important to experiment with different ratios and ingredients to achieve the desired fragrance strength, solubility, and appearance for your room spray.
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Using essential oils instead of fragrance oils
To make a room spray, you can use fragrance oils or essential oils. If you're using fragrance oils, you'll need to fill a glass spray bottle 3/4 of the way with distilled water, then add enough witch hazel to fill the rest of the bottle. Finally, add 20-40 drops of your chosen fragrance oil, replace the lid, and shake well.
If you'd prefer to use essential oils, you can follow a similar process. Add 10-20 drops of your chosen essential oil to a spray bottle, fill the rest of the bottle with water, and shake thoroughly before each use.
There are many different essential oils to choose from, each with its own unique aroma and potential benefits. For example, rosemary is said to be calming and helpful for focus, while lemongrass, eucalyptus, orange, and peppermint have antiseptic properties. You can also mix different essential oils to create a unique blend, such as combining frankincense or cedar with rosemary for a woodsy aroma.
When making a room spray with essential oils, it's important to remember that less is more. Using too much essential oil can be overpowering and may not provide the desired effect. It's best to start with a smaller amount and adjust the concentration as needed.
Additionally, it's worth noting that the concentration of essential oils in a room spray may vary depending on the size of the room and your desired fragrance strength. A larger room may require a higher concentration of essential oils to achieve the same fragrance intensity as a smaller room.
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Using a dispersant and preservative in room sprays
When making a room spray, it's important to use the right amount of fragrance oil to ensure the spray is effective and safe. The amount of fragrance oil you use will depend on the desired strength of the spray and the size of the bottle. For a standard 4 oz / 120 ml spray bottle, you can add 20-40 drops of fragrance oil. This amount can be adjusted depending on your preference, but it's important to remember that using too much fragrance oil may not necessarily make the spray stronger.
To ensure the fragrance oil is properly dispersed and preserved, you can add a dispersant and preservative to the room spray. This will help to solubilize the oil and prevent it from becoming viscous or cloudy. One example of a dispersant is Polysorbate 80, which can be added at a concentration of 18-22%. For preservation, you can use a product like Geogard at a concentration of 2%.
It's also important to consider the other ingredients in your room spray, such as distilled water and perfumer's alcohol. Perfumer's alcohol is less dense than water, so it will create a larger volume of finished product. When mixing the fragrance oil and perfumer's alcohol, you may need to add a small amount of distilled water and an emulsifier or cosolvent to help combine the ingredients.
Finally, it's crucial to refer to the IFRA document for your fragrance oil, which outlines the maximum concentration for air fresheners (room sprays). This concentration may be lower than what you would typically use, but it's important to stay within the recommended limits for safety and effectiveness.
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Frequently asked questions
You should use 20-40 drops of fragrance oil for a 4 oz / 120 ml spray bottle.
You will need a spray bottle, distilled water, witch hazel, and a dispersant and preservative for safety.
A lot of people make room sprays at 5% fragrance oil, but if you want yours to be stronger, you can make it at 10% or 15-18%.











































