Are Lost Mary Vapes Safe? Ingredients & If They Are Bad for You
Lost Mary vapes are less harmful than smoking, according to the NHS, but vaping is not risk-free. Anyone who does not smoke already should not start. Lost Mary vapes sold legally in the UK are made to the same regulatory standards as every other UK vape: the 2ml pod limit, the 20mg nicotine cap and the ingredient restrictions all apply. Every product has to be notified to the MHRA before it goes on sale.
Below, we cover what is inside a Lost Mary, who owns and makes the brand, the side effects to know about, and how to make sure the one in your hand is real to give you the overall picture of Lost Mary safety. If you already know you want one, our Lost Mary vapes page has every kit, pod and bottle.
Looking for a Lost Mary? Shop the full range, the BM6000 kit or the 10ml nic salts.
What Is Lost Mary?
Lost Mary is a Chinese vape brand, and it shares its R&D team with Elf Bar. Since the UK banned single-use vapes on 1 June 2025, the Lost Mary range here is rechargeable prefilled pod kits, such as the BM6000, BM600 and Nera, plus 10ml nic salt bottles for refillable kits.
There is no published origin for the name. The brand describes itself around three values: freedom, cutting edge and non-compromise. It is now sold in over 50 markets worldwide.
Lost Mary Ingredients
Inside a Lost Mary pod or bottle, the e-liquid is made from these main ingredients:
- Propylene glycol (PG): pharmaceutical grade
- Vegetable glycerine (VG): pharmaceutical grade
- Nicotine salt: the form of nicotine used in prefilled pods
- Food-grade flavourings
- Sweeteners: which Lost Mary and Elf Bar have been cutting back, including sucralose
One change worth knowing about; after their own study found nicotine lactate drew more nickel from nickel-chromium coils than nicotine benzoate, Lost Mary and Elf Bar started phasing out both nicotine lactate and nickel-chromium coils.
Do Lost Mary Vapes Contain Diacetyl?
Diacetyl is a flavouring chemical. The MHRA lists it among the substances that should not be used in UK nicotine e-liquids, alongside formaldehyde, in its ingredient guidance.
There is no diacetyl statement from Lost Mary themselves. What has been published is the testing behind it: Lost Mary and Elf Bar carried out over 136,000 tests in 2025 on finished products, e-liquids, aerosols and materials, and use 300 checks before a product launches, including 170 chemical analyses of e-liquid and aerosol.
Is Lost Mary a Weed Vape?
No. Lost Mary vapes contain nicotine, not THC or any form of cannabis, so a Lost Mary will not get you high. Every Lost Mary kit, pod and bottle sold in the UK is a nicotine product, and the box carries the standard warning that it contains nicotine; a highly addictive substance.
Do Lost Mary Vapes Have Nicotine?
Yes. Most Lost Mary pods are 20mg nicotine, the UK legal maximum. The Lost Mary BM6000 is also made in 10mg and 0mg pods. We sell five flavours in 10mg.
The bottled Lost Mary nic salts come in 5mg, 10mg and 20mg, all 50/50 VG/PG.
So a Lost Mary contains nicotine, not THC. For a Lost Mary with less or none, see whether Lost Mary pods come nicotine free.
Are Lost Mary Vapes Bad for You?
Compared with smoking, no. The NHS says evidence shows vaping is less harmful than smoking, and that most of the harmful chemicals in tobacco smoke, including tar and carbon monoxide, are not in vape aerosol.
Compared with not vaping at all, yes, there is some risk. Lost Mary vapes contain nicotine, which is addictive, and the NHS is clear that vaping is not risk-free. The NHS also says non-smokers and young people under 18 should not take up vaping.
Lost Mary Vape Side Effects
Side effects from a Lost Mary are the same as from any nicotine vape. The common ones the NHS lists are:
- Coughing
- Dry mouth and throat
- Mouth and throat irritation
- Shortness of breath
- Headaches
In our experience, side effects often settle when people drop a nicotine strength, and a 10mg pod or a lower strength bottle is an easy first step. If side effects carry on, speak to your GP or a pharmacist.
Are Lost Mary Vapes Regulated?
Yes, as long as they are bought from a UK retailer, Lost Mary vapes are regulated. The UK rules that came from the Tobacco Products Directive are applicable to every Lost Mary product on legal sale:
- Pods and tanks hold no more than 2ml of e-liquid
- Refill bottles are no bigger than 10ml
- Nicotine is capped at 20mg
- Packaging is child-resistant and tamper-evident
- Every product is notified to the MHRA, with its ingredients and emissions, before it can be sold
That is why a Lost Mary BM600 uses 2ml pods, and why larger kits like the BM6000 feed a 2ml pod from a separate refill container.
Single-use vapes are a separate question. Lost Mary disposables were discontinued in the June 2025 ban, and our guide on whether Lost Mary vapes are banned covers which kits are still legal.
Who Owns Lost Mary?
Lost Mary is a Chinese brand from the iMiracle group, which also owns Elf Bar. Its manufacturer, iMiracle (Shenzhen) Technology Co., Ltd., is based in Shenzhen, China, and is the company named against Lost Mary products on the MHRA's public list of notified vapes.
Lost Mary and Elf Bar share an R&D team, and both brands are led on engineering by the same R&D director. Lost Mary also works with partners: the Hawcos x Lost Mary Crystal Pro is a collaboration with Hawcos.
Where Are Lost Mary Vapes Made?
Lost Mary vapes are made in China, and their manufacturer, iMiracle, is based in Shenzhen.
Wherever they are made, the UK rules above apply to anything sold here, and the e-liquid has to be notified before sale.
Is Lost Mary a Good Vape?
In our view, yes, Lost Mary vapes are good for anyone who wants something simple. Lost Mary's wide range of flavours are the reason most people buy them. The pods come prefilled, most of the kits fire when you draw, and the range covers small and large. The Lost Mary Nera 30K is the one we would recommend for value, and the BM6000 for flavour choice.
The trade-off is choice of strength and cost over time. A refillable kit lets you pick any strength and any flavour, so it is worth a look once you know you are sticking with vaping. Our prefilled pod kits page has Lost Mary next to the other brands.
The Lost Mary Kits We Sell
Every kit here is rechargeable, takes replacement prefilled pods, and is made to UK rules.
Lost Mary BM6000 Prefilled Pod Vape Kit
Lost Mary Nera 30K Fullview Prefilled Pod Kit
Lost Mary x Hawcos Crystal Pro 600 Kit
How to Tell if a Lost Mary Is Fake
Fake Lost Mary vapes do exist, and they are not regulated or tested. To verify a Lost Mary:
- Find the authentication label on the side of the box.
- Enter the 18-digit security code on Lost Mary's official verification page, or scan the QR code with your phone.
- If the code does not verify, do not use the vape.
Two more signs of a fake Lost Mary vape are a missing nicotine warning on the box, and a pod bigger than 2ml. Both break UK rules. The NHS advice is to buy from a reputable retailer, and our guide on how to spot a fake vape goes through the checks for every brand.
More Lost Mary guides
Frequently Asked Questions
About the author - Shane Margereson
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