Anisha Riggs
Essential oils are powerful, and their interaction with plastic can lead to surprising changes in the properties of both materials. Some essential oils can break down or damage plastic containers over time, leading to leaks or a decrease in the oil's effectiveness. For example, citrus fragrances can cause polystyrene to melt. Therefore, it is important to choose the right type of plastic to avoid issues such as leaks, contamination, or degradation of the oil. Glass containers are also an option, but they are more expensive and less convenient than plastic. High-Density Polyethylene (HDPE) and Polyethylene Terephthalate (PET) plastics are safe for storing essential oils and are commonly used in the food and beauty industries.
| Characteristics | Values |
|---|---|
| Plastic type | Polyethylene Terephthalate (PET), High-Density Polyethylene (HDPE), Polystyrene, Polypropylene |
| Plastic properties | Longer chain lengths, stronger bonds |
| Plastic uses | Caps, diffusers, orifices |
| Plastic numbers | PET: 1, PETE |
| HDPE: 2 | |
| Polystyrene: 6 | |
| Plastic pros | Lightweight, convenient, cost-effective, versatile, won't break if dropped |
| Plastic cons | Potential issues: leaching, contamination, degradation of oils, discolouration, brittleness, stickiness |
| Plastic pros and cons | Safer for diluted oils, but pure oils should be stored in glass |
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What You'll Learn
Plastic containers can be used to store diluted fragrance oils
High-Density Polyethylene (HDPE) or plastic #2 is a safe option for storing diluted fragrance oils. HDPE plastics have stronger bonds and longer chain lengths, making them more resistant to the properties of essential oils. They are commonly used in the food and beauty industries and are safe for essential oil storage. When selecting an HDPE container, look for those labelled with the #2 recycling code to ensure suitability for oil use.
Polyethylene Terephthalate (PET) or plastic #1 is another type of plastic that is resistant to essential oils and can be used safely. PET plastics are commonly used in the beauty and food industries due to their durability and resistance to degradation. However, it is important to ensure that PET containers are specifically designed for essential oil storage and are made of high-quality materials.
Other types of plastic, such as polystyrene (plastic #6), are not suitable for storing essential oils as they can be easily dissolved by certain compounds in the oils. For example, d-limonene in lemon oil can disrupt the polystyrene chains, causing them to break apart. Therefore, it is crucial to choose the right type of plastic to avoid issues such as leaching, contamination, or degradation of the diluted fragrance oils.
In addition to using the appropriate plastic type, it is important to follow proper storage practices. Diluted fragrance oils should be stored in a cool, dry place, away from direct sunlight, and in airtight containers with tight lids to prevent oxidation and evaporation. It is also recommended to provide customers with storage suggestions to ensure the longevity and quality of the oils and avoid early expiration.
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Pure fragrance oils should be stored in glass containers
Pure fragrance oils are highly potent and can interact with the container they are stored in. While plastic containers are lightweight, convenient, and cost-effective, they are not always suitable for storing pure fragrance oils. Some fragrance oils can break down or damage plastic containers over time, leading to leaks and reduced oil quality. This is because certain plastics are porous, allowing air to pass through and causing the oil to break down.
To avoid this issue, it is recommended to store pure fragrance oils in glass containers. Glass is non-porous and inert, meaning it will not react with the oil or allow air to pass through, ensuring the oil stays fresh and potent. Glass containers are also ideal for storing fragrance oils as they are often dark-coloured, which helps protect the oil from UV light. Exposure to UV light can increase the temperature of the oil and cause deterioration, so storing oils in dark-coloured glass containers helps maintain their quality.
Additionally, glass containers with glass stoppers or droppers are preferable to those with rubber parts, as rubber can deteriorate quickly when exposed to pure fragrance oils, contaminating the oil. Glass droppers also allow for precise dispensing of the oil, making them ideal for aromatherapy or skincare applications.
When choosing a glass container for fragrance oils, it is important to consider the type of oil and its intended use. For example, clear glass containers allow you to ensure every drop is filled with oil, while coloured glass containers can add a luxurious touch to your collection. Glass containers with tight-fitting stoppers or lids are crucial to prevent leakage and maintain the quality of the oil.
Overall, storing pure fragrance oils in glass containers is the best way to ensure the longevity and potency of the oil while also providing a safe and aesthetically pleasing storage solution.
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HDPE plastic is safe for storing fragrance oils
While glass bottles are often used for storing fragrance or essential oils, high-quality plastics like HDPE (High-Density Polyethylene) are also recommended. HDPE is a safe option for storing fragrance oils and is commonly used in caps, diffusers, and orifices designed for essential oils.
HDPE containers are usually less clear than PET bottles, which can help extend the shelf life of your fragrance oils by protecting them from light. However, it is important to note that frequent and prolonged exposure to air and water can change the oil's consistency, smell, and properties, so always use a tight lid to keep the fragrance oils safe from oxidation, air, or water.
HDPE plastic has stronger bonds and longer chain lengths, making it more resistant to the properties of fragrance oils. This type of plastic will not be affected by essential oils, as the diluted oils in DIY projects are highly unlikely to have a high enough concentration to interact with the container.
When selecting an HDPE container, look for those labeled with the #2 recycling code to ensure the plastic is appropriate for fragrance oil use. HDPE is a versatile and cost-effective option for storing fragrance oils, and its lightweight and durable nature makes it a popular choice for many.
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PET plastic is also suitable for storing fragrance oils
When it comes to storing fragrance oils, the choice of container material is crucial. Fragrance oils are potent and can interact with and degrade certain materials, such as plastics. While glass containers are often recommended for pure essential oils, plastic containers can be used for diluted essential oils or fragrance oils.
One type of plastic that is suitable for storing fragrance oils is Polyethylene Terephthalate (PET) plastic. PET plastic is commonly used in the beauty and food industries due to its durability and resistance to degradation. It is also known as plastic #1 or PETE, and it is a safe option for fragrance oil storage. When choosing PET plastic containers for fragrance oils, it is important to select high-quality containers specifically designed for this purpose.
PET plastic containers offer several advantages for storing fragrance oils. Firstly, they are lightweight and convenient, making them ideal for travel and storage in bags without the worry of breakage. Secondly, PET plastic bottles are cost-effective, often more affordable than glass containers. Additionally, PET plastic bottles are available in various sizes and shapes, providing flexibility in packaging options.
However, it is important to note that not all fragrance oils can be stored in PET plastic. Some essential oils may still interact with and degrade PET plastic over time, leading to leaks or a decrease in the oil's effectiveness. Therefore, it is recommended to follow specific guidelines for each fragrance oil to determine the most suitable storage material.
To ensure the longevity and quality of fragrance oils stored in PET plastic, it is crucial to follow proper storage practices. This includes using a tight-fitting lid to prevent oxidation and exposure to air and water, which can alter the oil's consistency, smell, and properties. Additionally, fragrance oils should be stored in a cool, dry place, away from direct sunlight, as UV rays can cause an increase in oil temperatures and lead to deterioration.
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Polystyrene is not suitable for storing fragrance oils
When it comes to storing fragrance oils, it's important to choose the right container to avoid issues like leaks, contamination, or degradation of the oils. While some plastics are suitable, others can be easily damaged by the oils. Polystyrene, a common type of plastic, is not recommended for storing fragrance oils due to its reactivity with certain compounds.
Polystyrene is a type of plastic identified as number 6 in the recycling system. It is known to be susceptible to certain compounds found in fragrance oils, such as d-limonene in lemon oil. Lemon oil, in particular, disrupts the van der Waals forces in polystyrene, causing the polymer chains to break apart. This can result in the plastic dissolving or breaking down, as some people have experienced when using polystyrene containers for fragrance oils.
The choice of container for fragrance oils is crucial to ensure their longevity and maintain their quality. While polystyrene may be convenient and cost-effective, its reactivity with certain oils makes it unsuitable. Using polystyrene containers can lead to leaks and the loss of oils, which can be both wasteful and potentially hazardous.
To avoid issues with polystyrene and other reactive plastics, it is recommended to use alternative materials or specific types of plastic that are known to be compatible with fragrance oils. Glass containers, for example, are often recommended for storing fragrance oils as they are inert and do not react with the oils. Additionally, certain types of plastics, such as High-Density Polyethylene (HDPE) or Polyethylene Terephthalate (PET), are considered safe for storing fragrance oils due to their stronger bonds and resistance to degradation.
When choosing a container for fragrance oils, it is important to prioritize materials that will not react with the oils and compromise their quality or safety. While polystyrene may be readily available and inexpensive, its unsuitability for storing fragrance oils makes it a poor choice. By selecting alternative containers, you can ensure the integrity of your fragrance oils and avoid potential issues associated with polystyrene.
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Frequently asked questions
Polyethylene Terephthalate (PET) plastics, also known as plastic #1, are considered safe for storing fragrance oils. High-Density Polyethylene (HDPE) or plastic #2 is another option. HDPE plastics are commonly used in caps, diffusers, and orifices designed for essential oils.
Avoid using polystyrene (plastic #6) for storing fragrance oils. Oils with d-limonene, such as lemon oil, will easily dissolve this type of plastic.
No, not all plastic containers are suitable for storing fragrance oils. Some fragrance oils might break down or damage plastic containers over time, leading to leaks or reduced effectiveness of the oils.
Glass containers are recommended for storing fragrance oils as they are impervious to oils and easy to clean. Stainless steel containers are another option as steel is also impervious to oils and easy to clean.
Ensure that your fragrance oils are stored in airtight containers and kept in a cool, dark place away from direct sunlight.
