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Diffusion is the process of dispersing essential oils so that their
aroma fills a room or an area with the natural fragrance. From the simple
to the elaborate, many different methods exist for diffusing oils into
a room. Three easy methods exist which can be done with things you probably
already have in your household. In addition, there are numerous diffusers
and diffusing devices available for purchase from aromatherapy vendors.
This article will detail the different types of devices and methods
that may be used.
Methods That Can Be Done With Items Already in Your Household
Simple Tissue Diffusion
Place 3-4 drops of essential oil on a tissue. Place the tissue near
you. As movement occurs in the room (i.e. as you move or as someone
walks by), you will notice the aroma.
Advantages: This method can be used anywhere and is
quickly transportable.
Disadvantages: This method does not emit much aroma
into a room.
Steam Diffusion
Boil 2 cups of water. Pour the water into a bowl and add up to 10 drops
of oil to the water. Use fewer drops if you are using an oil that may
cause irritation to your mucous membranes (i.e. cinnamon, eucalyptus,
rosemary, pine, thyme, cajuput, etc.). Use of energizing or relaxing
oils can make this method useful any time of day or night. The steam
will heat the oils and cause them to evaporate quickly into the room.
Advantages: This method will quickly diffuse the oils
into a room.
Disadvantages: The aroma is not exceptionally long-lasting.
Additionally, the heat may alter or destroy certain constituents of
the oils and thus the therapeutic benefit may not be as optimal as using
cold-air diffusion methods.
Candle Diffusion
Light a candle and allow it to burn for about 5 minutes. Extinguish
the candle, place 1 drop of essential oil in the melted wax (not on
the wick!) and then relight the candle. Essential oils are highly flammable,
so great care must be used.
Advantages: This method can be used most anywhere that
a candle may be used.
Disadvantages: Essential oils are flammable, so great
care must be used. The aroma is not long-lasting. The heat may alter
or destroy certain constituents of the oils and thus the therapeutic
benefit may not be as optimal as using cold-air diffusion methods.
Diffusers and Diffusion Products on the Market
The descriptions below are generalities about the different products
that are available. Always check the specifications, requirements and
safety comments supplied with the particular product you are interested
to confirm that it is suitable for your needs and expectations.
Lamp Rings
Lamp rings are a terracotta ring that sets directly onto a light bulb.
It has a grooved lip that goes all the way around it. This lip holds
essential oil. The heat from a light bulb heats the essential oil in
the Lamp Ring and the oil is then gently diffused into the room.
Advantages: Lamp Rings are usually very inexpensive.
Disadvantages: If any essential oil gets onto the light
bulb, the light bulb could break. The heat may alter or destroy certain
constituents of the oils and thus the therapeutic benefit may not be
as optimal as using cold-air diffusion methods.
Clay Pot Diffusers
Clay pot diffusers go by many names, but they resemble small terracotta
pots. They also can be found in various small shapes such as pyramids.
A clay pot diffuser contains an opening for adding essential oils. Usually
a cork is the method by which the opening is closed. The oils permeate
through the pot and then diffuse out into the room. The intensity of
the aroma depends on how much essential oil is added to the clay pot.
Advantages: Clay pot diffusers are very inexpensive,
easy to use, and do not require electricity or batteries.
Disadvantages: The aroma is strongest shortly after
adding essential oil to the clay pot and then dissipates as time passes.
As such, it’s hard to keep the same level of aroma in the room.
Candle Diffusers
A candle diffuser is a diffuser that utilizes a tea light or other candle
to gently heat the essential oil to promote diffusion into a room. A
candle diffuser is usually ceramic or metal. The diffuser has an opening
or space for a candle and a little bowl or tray for storing a tiny quantity
of essential oil. Candle diffusers come in many shapes and colors from
the modest functional piece to the piece that acts both as a work of
art and as a candle diffuser.
Advantages: Candle diffusers can be inexpensive, depending
on the style and design. Candle diffusers do not require electricity
or batteries.
Disadvantages: One needs to be as careful with using
a candle diffuser as with using candles in general. Also, one must be
sure to keep replacement candles on hand. The aroma generally diffused
by a candle diffuser is very light and it does not usually diffuse an
entire room. The heat may alter or destroy certain constituents of the
oils and thus the therapeutic benefit may not be as optimal as using
cold-air diffusion methods.
Fan Diffusers
Fan diffusers come in a variety of sizes, shapes and styles. A fan diffuser
uses a fan to blow the essential oils into the air. To use a fan diffuser,
essential oils are usually placed onto a disposable absorbent pad or
into a tray. The pad or tray is placed into the unit and then powered
on. The fan then blows air across this pad or tray and carries the aroma
throughout the room. Since fan diffusers come in a variety of sizes,
some fan diffusers will only diffuse a small room whereas others can
diffuse very large areas. Some fan diffusers require the use of an absorbent
pad (the pads can usually be reordered from the retailer or directly
from the manufacturer). In others, the use of absorbent pads is optional.
Advantages: Fan diffusers are available in a wide variety
of brands and styles. Depending on the brand and model, fan diffusers
can fragrance a large area. Fan diffusers are generally easy to use.
Some fan diffusers are powered by both electricity and batteries making
them quite portable.
Disadvantages: Some fan diffusers, depending on the
brand and model, require the purchase of replacement absorbent pads.
Some fan diffusers are noisy.
Electric Heat Diffusers
Similar to a fan diffuser, heat diffusers use heat and a fan to gently
heat the oil and disperse the aroma into a room.
Advantages: Electric heat diffusers may fragrance larger
areas, depending on the brand and style. They can also help to more
efficiently disperse the aromas of thicker oils such as Sandalwood and
Patchouli.
Disadvantages: Heat may alter or destroy certain constituents
of the oils and thus the therapeutic benefit may not be as optimal as
using cold-air diffusion methods.
Nebulizers
A nebulizer is a device that takes essential oils and breaks them into
separate molecules before dispersing the smaller molecules into the
room. It is said that these smaller molecules can be more readily absorbed
by the lungs and thus create greater therapeutic value than by use of
other diffusion methods. A nebulizer is a small (perhaps 8" x 4" x 6")
device that consists of two main parts: the plastic base that contains
the motor and a very unusual, clear blown-glass looking device that
holds and "nebulizes" the oils. Instead of the use of the unusual glass
piece, some nebulizers use a special bottle that looks like a boston
round bottle.
Advantages: It is said that nebulizers can supply greater
therapeutic benefit than the use of other diffusers because they break
the oils down into smaller molecules.
Disadvantages: The glass piece is breakable and expensive
to replace. Compared to other methods, cleaning the glass between different
oils is time consuming. Depending on the style nebulizer, thick oils
such as Sandalwood and Patchouli usually cannot be used as they can
clog certain style nebulizers.