Diffuser Buying Guide

Diffusers are an extremely popular alternative to scented candles. With endless scents to choose from, in a variety of beautiful bottles to proudly display, there is a diffuser to suit every room and fragrance need. Whether you want to consistently perfume a room, or quickly refresh an area prone to stale odours such as the kitchen, there is a different type of diffuser for every eventuality.

Reed diffusers

Reed diffusers are a constant fragrant companion for your home. Long lasting and with bountiful scent options available, they are a fabulous way to ensure your interior spaces are always perfumed and create an inviting environment for guests.

 How to Use

Remove the bottle cap/cork and insert the included reeds into the oil. A lid with an opening for the reeds is sometimes provided to cover the top of the bottle, if so attach this before adding the reeds. Ensure the reeds are evenly spaced and they will then gently diffuse the scent into the room for months to come. The length of time that a reed diffuser will remain fragrant depends on the number of reeds and the amount of oil in the bottle. Reed diffusers are available in capacities ranging from 100ml which should last for up to three months to much larger 2.5L bottles which can last up to a year. We suggest reversing the reeds about once a week to ensure the perfume continually permeates the room and can be reversed more regularly if an instant burst of fragrance is needed. A wide range of refills are also available in a host of favourite fragrances, so never fear if your beloved diffuser runs out of oil.

Certain factors can affect how quickly the diffuser oil will be used, which will also determine where they should be placed in a room. Heat will cause the oil to be absorbed more quickly by the reeds, therefore diffusers should be kept away from direct sunlight and radiators where possible. Moving/rising air will also shorten the lifespan of a diffuser, so ensure they are not placed in draughts or near open windows.

Usually displayed in stunning glass bottles which can be stylishly simple or beautifully adorned, reed diffusers are not just a practical home addition, but a must-have decorative ornament for any room. The bottles themselves are constantly being reimagined to incorporate different materials such metals, porcelain and even plastics to offer something different to the traditional glass vessel.

Catalytic diffusing lamps

Catalytic diffusing lamps, or fragrance lamps, are an effective and efficient way of filling a home with subtle scents. Operating on the process of catalytic combustion, the lamps purify the air by destroying odour molecules, eliminating bacteria and germs, and increasing oxygen levels. Unlike room sprays, candles and diffusers, catalytic lamps do not mask an odour, but actively purify, cleanse and perfume the air.

A delightfully decadent range of Dr Vranjes and Lampe Berger catalytic diffusers are available from Amara, along with a wide selection of signature fragrance oil refills for you to instantly invigorate your home with your favourite scent.

 How to Use

Select your desired fragrance oil and pour into the catalytic lamp. Fill the diffuser bottle according to the brand instructions, typically between ⅓ to ⅔ capacity. Insert the catalytic wick into the lamp, cover with the snuffer cap and allow to soak for approximately 20 minutes. Stand for longer for the first lighting of a new wick.

Light the catalytic wick and leave for at least 2-4 minutes before extinguishing. Once blown out, place the decorative lid over the wick. Perfumed oxygen will be released into the room to diffuse and dispel the unwanted odours. 30 minutes is all that is needed to fully fragrance a 20m² room for the day, making this type of diffuser a powerful option.

Once your room is beautifully fragranced, remove the decorative lid and replace the snuffer cap. Cutting off the flow of oxygen will end the catalytic process. Catalytic diffusers are an easy way to instantly refresh a room and can be reused time and time again.


Place the lamp on a stable, level surface, away from heat sources or flammable materials.

Take care not to overfill the lamp. Always adhere to the instructions given by the brand.

During the 2-4 minutes that the wick is lit, do not leave the flame unattended. After blowing out, take care as the wick will be scalding hot.  

After 30 minutes of burning, remove the decorative lid with caution and immediately cover the wick with the snuffer cap. This will stop the catalytic process and prevent the fragrance oils from evaporating when the lamp is not in use.

Ultrasonic diffusers

Another way to gently perfume a room is through an ultrasonic diffuser. Through nebulisation these diffusers use water soluble fragrance combined with water to disperse a scented mist into the room.

 How to Use

Add 3-10 drops of fragrance depending on the strength required to 100ml of water in the diffuser, when connected to a mains supply it will subtly release the mist. Ultrasound diffusers instantly refresh a room, by cleaning & subtly humidifying the air. The Millefiori Ultrasound diffuser is not only a fabulous home fragrance solution but is also a design feature with its coloured light changing capabilities. Please note that water soluble fragrances are only available separately.

Artificial flower diffusers

The home fragrance industry is constantly evolving to incorporate new ideas to break away from traditional scenting options, Herve Gambs’ artificial flower diffusers are one of these fabulously original ideas. Created to use in conjunction with Herve Gambs room sprays, these artificial flowers are perfect for dispersing divine fragrances into the air. Herve Gambs offers a beautiful range of couture rose diffusers that include a small bottle of signature room spray along with a stunning single rose in a glass holder. All that is needed is a quick spritz on the petals to transform it into a hassle-free decorative fragrance option for your home.


Diffusers are a continual fragrance option, therefore choosing the right scent for a room is essential. Rich fragrances with woody or sweet notes can be overpowering in smaller spaces but can work perfectly in more open rooms. Soothing scents with herbal or floral notes are ideal for bedrooms or bathrooms, where relaxation is required and some top home fragrance brands such as Neom have even developed aromas to help calm busy minds by helping to combat stress & anxiety. Energising fragrances are ideally placed in kitchen and living areas, to invigorate and enliven the senses opt for zesty citrus or fruity notes which will refresh any environment. You can also switch your home fragrance with the changing seasons by incorporating light, fresh scents into your interior in the warmer months, then contrast with rich & inviting aromas as the weather gets colder.

 As with scented candles, the array of diffuser fragrances is vast and you will find an option to suit any taste. Fragrance notes can be likened to music with top, middle & base notes combining to create a harmonious scent. You will find details of fragrance notes in each individual diffuser description along with which fragrance group they belong to, whether sweet, woody, fresh, floral and many more.