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Wellness & Aromatherapy: Second-Hand vs New
By the Nest & Yard editorial teamUpdated 2026-08-094 min read
Our pick: the ASAKUKI 300ml Essential Oil Diffuser, Ultrasonic Aroma Diffuser and Humidifier — the best Wellness & Aromatherapy we tested, from £18.99.
Creating a calming atmosphere in your home can be easily achieved with aromatherapy products like essential oil diffusers and sleep sprays. When considering items like the InnoGear diffuser or the ASAKUKI range, you’ll often find options available both new and second-hand on Amazon UK – but is buying used a savvy choice? We explore the pros and cons of each approach, looking at what to inspect when purchasing a pre-owned item and where investing in a brand new product might still be the best option.
See the full range in Wellness & Aromatherapy.

#1 Pick
InnoGear Upgraded Version Aromatherapy Essential Oil Diffuser, Ultrasonic Cool Mist Humidifier with 7 Colour LED Lights- Ultrasonic
Currently unavailable
Pros
- Best-selling diffuser with a huge, well-established review base
- Waterless auto shut-off protects the unit
- 7-colour LED mood lighting with adjustable brightness
Cons
- Larger footprint than compact/portable diffusers

#2 Pick
ASAKUKI 300ml Essential Oil Diffuser, Ultrasonic Aroma Diffuser and Humidifier- Ultrasonic, USB Powered
£18.99
Pros
- Compact 300ml size suits smaller rooms and bedrooms
- 7 LED colour light settings for a calming glow
- Auto shut-off protects against running dry
Cons
- Smaller tank needs refilling more often than larger models

#3 Pick
ASAKUKI 500ml Essential Oil Diffuser, 5-in-1 Ultrasonic Diffuser Humidifier with 7 LED Colour Light- Ultrasonic
£17.99
Pros
- Near-silent operation under 23dB
- Auto shut-off when the water runs out
- 7-colour LED mood lighting
Cons
- Plastic housing feels less premium than wood or ceramic

#4 Pick
This Works Deep Sleep Pillow Spray, 75ml Lavender, Camomile and Vetivert Sleep Mist- Manual/Passive
£19.39
Pros
- Science-backed lavender and camomile blend
- Simple spritz-on-pillow application before bed
- Long-standing bestseller with a large review base
Cons
- Pricier per ml than basic pillow sprays
FAQ
What are the potential benefits of buying a used aromatherapy diffuser compared to a new one?
A used diffuser can often be significantly cheaper, letting you access aromatherapy without a large initial investment. Many users find that a well-maintained diffuser offers a similar experience to a brand-new one for a fraction of the cost.
What should I look for when inspecting a second-hand aromatherapy diffuser listed online?
Check the base and reservoir for signs of leaks or cracks, and ensure the timer function is working correctly. Also, examine the nebulizer pad – if it’s worn or discoloured, replacement pads are usually readily available.
Are there specific components of an aromatherapy diffuser that tend to wear out quickly?
The nebulizer pad is a common point of failure as it degrades with use; the water pump can also become noisy or stop working reliably over time. Similarly, the ceramic or glass reservoir may develop hairline cracks if not handled carefully.
How often should I clean my aromatherapy diffuser, regardless of whether it’s new or used?
Regular cleaning is vital for all diffusers to prevent blockages and maintain optimal performance; aim to descale with white vinegar at least once a month.
What kind of oils are best suited for use in a used diffuser, considering potential pad wear?
Lighter, citrus-based oils tend to be gentler on the nebulizer pads than heavier oils like sandalwood or patchouli. Avoid using excessively concentrated essential oils to prolong the lifespan of the pad.
If a used diffuser’s timer isn't working, what steps should I take before contacting the seller?
Try replacing the batteries in the remote control if applicable, and ensure the unit is fully charged. Check that the timer settings are correctly configured according to the manufacturer’s instructions.
Are there any particular brands of aromatherapy diffusers that tend to hold their value better on the second-hand market?
Ultrasonic diffusers from established brands like Intex and Urban Aroma generally maintain a higher resale value due to their durability and widespread popularity.
What maintenance tasks should I perform regularly to extend the life of my used aromatherapy diffuser?
After each use, empty any remaining water and dry the reservoir thoroughly. Periodically clean the nebulizer pad as per the manufacturer’s guidelines.
If a used diffuser arrives with damaged parts, what are my options regarding returns?
Returns are governed by Amazon's standard returns policy, which allows for returns of unused items within 30 days of receipt if they are faulty or not as described.
Can I find replacement nebulizer pads and other accessories for used aromatherapy diffusers?
Yes, most brands offer replacement parts – you’ll typically find these listed on the manufacturer's website or through Amazon UK. Be sure to check compatibility with your specific diffuser model before purchasing.
In depth
Buying aromatherapy diffusers – and indeed many wellness items like reed diffusers, essential oil burners, and even some ultrasonic humidifiers – presents a particular set of considerations when thinking about purchasing used versus new. The core appeal of aromatherapy is the quality and concentration of the oils themselves, but the diffuser or delivery system needs to be equally effective to truly deliver those benefits. While the idea of saving money on a pre-owned device can be attractive, it’s vital to approach secondhand purchases with a focused understanding of potential drawbacks, particularly given the delicate nature of these products and the materials they employ.
When evaluating a second-hand aromatherapy diffuser, start by scrutinising the listing description for details about its history. Look beyond simply stating "used" – inquire about how the item was used previously. Was it primarily used in a bathroom with high humidity? Frequent use can accelerate wear and tear on components like plastic housings or silicone seals. A seller who’s transparent about past usage is generally a better indicator of an honest assessment of the product's condition. Pay close attention to any photographs provided, looking for signs of damage: cracks in the reservoir, discoloration indicating prolonged exposure to oil residue, or evidence of leaking. Don’t hesitate to ask the vendor for additional images if the initial photos aren’t sufficient – clear, well-lit shots showing all aspects of the diffuser are crucial.
Certain components within aromatherapy diffusers are inherently more susceptible to failure than others. Ultrasonic humidifiers, which utilise vibrations to create a fine mist, frequently experience issues with their transducers – the small ceramic discs that generate the mist. These are delicate and prone to cracking or chipping with repeated use, leading to inconsistent performance or complete silence. Similarly, reed diffuser systems rely on the longevity of the reeds themselves; they absorb oil unevenly, lose their capillary action over time, and can become clogged with residue if not properly maintained. Plastic components, particularly those exposed to oils, can degrade over time, becoming brittle and prone to cracking. Check for any signs of warping or discoloration in the plastic housing – this is a strong indicator of prolonged exposure to oil-based products.
Beyond the immediate operational aspects, consider the materials used in construction. Diffusers often incorporate glass reservoirs, which are beautiful but inherently fragile. Even minor bumps during transport can cause cracks, rendering the diffuser unusable. Silicone seals around pumps or reservoirs can also dry out and crack with age, leading to leaks and potentially damaging sensitive electronic components. The quality of the base material – whether it’s plastic, wood, or metal – will influence its durability. Wood diffusers, for instance, are susceptible to warping in humid environments and may require more frequent cleaning and maintenance to prevent mould growth.
There are certainly circumstances where buying a used aromatherapy diffuser can be a sensible decision. If you're relatively new to aromatherapy and simply want to experiment with different oils without investing heavily upfront, a lightly used diffuser from a reputable seller might provide an affordable entry point. However, if you plan on using your diffuser regularly – perhaps as part of a dedicated wellness routine – it’s generally worth considering the additional cost of a new device. The potential for component failure and the need for eventual replacement can quickly negate any initial savings.
Ultimately, the value proposition depends on your budget, usage patterns, and tolerance for risk. New diffusers come with manufacturer guarantees, which offer peace of mind against manufacturing defects. Although it’s important to review the retailer’s standard returns policy (typically handled through Amazon), you avoid inheriting potential issues from a previous owner's usage. For high-quality devices or those intended for frequent use, investing in a new diffuser is often a more reliable and sustainable choice, ensuring consistent performance and longevity – allowing you to fully enjoy the benefits of aromatherapy without unexpected breakdowns or costly repairs.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.