ASAKUKI 500ml Essential Oil Diffuser
Best for: All-night bedroom diffusing, large rooms
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The all-nighter — a big 500ml tank that runs 16+ hours, so it mists lavender from bedtime clean through morning.
Worth itA low price for a 500ml tank, which is larger than most pricier diffusers carry. Tank size is the spec that decides whether it runs all night.Small-tank diffusers can dry out by 2am; ASAKUKI's 500ml tank runs up to 16 hours on low, covering a full night plus a nap. Add whisper-quiet ultrasonic misting, an auto-shutoff safety cutoff when dry, seven soft LED colors, and a remote, and it's the bedroom-optimized pick. The wide tank is a touch bulkier and refilling takes a steady hand — small costs for all-night aromatherapy.
Price & where to buy
Prices checked 2026-10-31Prices shown were last checked on 2026-10-31 and can change at any time — the price on the retailer's site at checkout is the one that applies. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
How our prices work
We show the price at our recommended retailer as at our last check of that offer (2026-10-31) and, when Amazon reports one, its list price for comparison. Amazon prices come from Amazon's own product data service and are refreshed twice a day; each one shows the date and time Amazon gave it, and one older than 24 hours is replaced by “Check price”. Other retailers' prices are checked by hand and show the date of that check. Retail prices move constantly, so the price on the retailer's own page at checkout is the one that applies. More on Amazon prices
Should you buy it?
What we like
- 16-hour runtime covers a full night
- Whisper-quiet ultrasonic mist
- Auto-shutoff safety when dry
- Remote + 7 soft light colors
What to know before buying
- Bulkier than mini diffusers
- Wide tank awkward to refill
- Light glows unless dimmed off
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At a glance
How it scores
How our 8.4/10 breaks down — rated on the dimensions that matter most for aromatherapy diffusers, from published specifications and third-party test data, not the marketing.
Compare with alternatives
Quick verdicts for the aromatherapy diffusers most often considered alongside the ASAKUKI 500ml Essential Oil Diffuser.
ASAKUKI 500ml Essential Oil Diffuser vs URPOWER 500ml Aromatherapy Diffuser
The value bestseller — 500ml capacity, adjustable mist and the wood-grain look that started the category, at a low price.
→ First diffuser, second rooms, tight budgets
URPOWER 500ml Aromatherapy Diffuser review →ASAKUKI 500ml Essential Oil Diffuser vs InnoGear Oil Diffuser (150 ml)
The compact multi-pack favorite — a small, cheap, reliable diffuser you can put in every room, often sold in twos.
→ Whole-home coverage, wind-down hour, offices
InnoGear Oil Diffuser (150 ml) review →ASAKUKI 500ml Essential Oil Diffuser vs Vitruvi Stone Ultrasonic Diffuser
The design-object splurge — a hand-finished ceramic diffuser that looks like decor, for people who want the aesthetic as much as the aroma.
→ Design-led homes, gifting, aesthetics-first
Vitruvi Stone Ultrasonic Diffuser review →Not sure which one is right for you?
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More aromatherapy diffusers we compared
See all →
Airome Obsidian Essential Oil Diffuser
SALKING Acorn 300ml Aroma Diffuser
MADETEC Essential Oil Diffuser (550ml)
GuruNanda Ultrasonic Essential Oil Diffuser
Frequently asked questions
Does a diffuser actually help sleep?
Aromatherapy (lavender especially) has modest but real evidence for relaxation and sleep-onset — the scent-plus-ritual cue is the mechanism. It won't sedate you; it lowers the wind-down friction.
Why the 500ml tank matters?
Small-tank diffusers can dry out mid-night and stop. The 500ml runs bedtime-to-morning, so the scent doesn't vanish at 2am — the single most practical bedroom spec.
Is the mist safe overnight?
Ultrasonic cool mist is safe running all night; auto-shutoff prevents dry-burn. Keep it a few feet away and use pure essential oils, not fragrance oils.
Loud?
Whisper-quiet on low — quieter than most fans. The optional water-trickle is the only sound, which many find soothing.