Learn / Products
A guide to cannabis vapes.
Vape pens heat cannabis oil into an aerosol you inhale. They’re portable, low-odor and quick to take effect. Here’s how the hardware works, what the oil labels mean, and how to stay safe.
The hardware
- Cartridges are small glass or plastic tanks of oil that attach to a separate battery. Many share a common thread size, so one battery can fit several brands.
- Pods are cartridges designed for one brand’s battery system. Pod and battery have to match.
- All-in-one vapes, which California calls integrated vaporizers, combine oil and battery in one device. Many are rechargeable.
Some batteries have adjustable voltage or a preheat setting. Follow the manufacturer’s instructions, and ask our team if you’re unsure what fits.
The oil inside
| Oil | How it’s made |
|---|---|
| Distillate | Extract refined into concentrated cannabinoid oil, often with terpenes added back for flavor |
| Live resin | Solvent extract of fresh-frozen plants, made to keep more natural aroma |
| Live rosin | Solventless oil pressed from hash made from fresh-frozen plants |
These are industry terms. Whatever the oil, licensed vapes must pass the same state lab tests, including for pesticides, heavy metals and residual solvents. More in our guide to live resin vs. live rosin.
How vaping feels
Like smoking, vaping takes effect within minutes, peaks in roughly 20 to 30 minutes, and usually fades over two to three hours. Vape oil is a concentrate, though, so each puff can carry much more THC than a puff of flower. Take one short puff, wait several minutes, and decide from there.
Labels show THC in milligrams for the whole cartridge or device. Adult-use vapes can contain up to 1,000 mg of THC per package.
Safety: buy licensed, don’t modify
In 2019 and 2020, the CDC counted 2,807 hospitalized cases or deaths from a vaping-related lung injury known as EVALI. The outbreak was strongly linked to vitamin E acetate. Of the patients who vaped THC and reported where they got it, 78% used only informal sources such as friends, dealers or online sellers.
- Buy vapes only from licensed retailers. Licensed products carry the universal cannabis symbol on the device itself.
- Never add anything to a cartridge, or refill or modify one.
- No vaping product is risk-free. If you develop a cough, chest pain or shortness of breath, stop and see a doctor.
Care, rules and disposal
- Keep vapes away from heat, such as a hot car, which can degrade cannabinoids and damage the battery. Store them in their package, out of reach of children and pets.
- California law treats vaping like smoking: not in public places, not where smoking is banned, and never while driving or riding in a vehicle.
- Vape packaging can’t call the device “disposable” or suggest putting it in the trash or recycling. When one is empty, follow your city’s guidance for batteries and electronic waste.
Sources
- California Department of Cannabis Control. Responsible cannabis use (inhalable products)
- Barrus DG et al. RTI Press (2016). Tasty THC: promises and challenges of cannabis edibles (inhalation time course)
- Centers for Disease Control and Prevention (archived). Outbreak of lung injury associated with the use of e-cigarette, or vaping, products
- California Code of Regulations, Title 4, § 17410. Universal symbol on vape hardware
- California Code of Regulations, Title 4, § 17304. THC concentration limits
- California Code of Regulations, Title 4, § 15714. Required laboratory tests
- California Business and Professions Code § 26120. Packaging and labeling, including the ban on calling vapes “disposable”
- California Health and Safety Code § 11362.3. Where cannabis use is not allowed (vaping counts as smoking)
- Jaidee W et al. Cannabis and Cannabinoid Research (2022). Kinetics of CBD, Δ9-THC degradation and cannabinol formation in cannabis resin at various temperature and pH conditions
This guide is general education, not medical or legal advice. Talk to a doctor about your health, and check current California law.