CBD RSO
Naturally high CBD full spectrum oil
Indica RSO
Naturally high potency
Sativa RSO
Naturally high potency
1:1 Balanced RSO
Equal parts CBD and THC
Full Spectrum Oil · Potency varies
Full Spectrum Oil (RSO)
Rub it. Eat it. Smoke it. Cannabis oil in its simplest form.
- Per serving
Calibrated 1 gram applicator
- Per package
Potency varies by batch; see the front label
For experienced cannabis users only. This product has 20 mg or more of THC per serving. Start with a partial serving and wait at least 2–3 hours before taking more.
In California · 21+
Find Full Spectrum Oil (RSO) at a dispensary
Cannabis products are sold only by licensed California retailers, in store or by delivery.
Outside California, or prefer THC-free? Shop Proof Remedy hemp CBD online.
About Full Spectrum Oil (RSO)
Proof's Full Spectrum Cannabis Oil captures the benefits of cannabis oil in its simplest form. Also known as RSO, popularized by cannabis pioneer Rick Simpson, this unrefined, ethanol-derived extract keeps the naturally occurring terpenes, flavonoids and other plant compounds.
Strain specific, with potency that varies by batch. Administration is easy with the calibrated 1 gram applicator.
Why people choose it
People reach for it for
- Strain-specific effects
- Whole-plant extract
- Flexible use
How to use it
Getting started with Full Spectrum Oil (RSO)
Everyone's tolerance is different. Start low, go slow, and talk to your doctor about any medications or health conditions.
- 1
Check the label
Potency varies by batch and strain, so read the front label of your package first.
- 2
Measure small
Use the calibrated 1 gram applicator to measure a very small amount to start.
- 3
Use it your way
Rub it on, eat it, or smoke it. If you eat it, wait at least 2–3 hours before taking more.
How long it takes to feel it
- Applicator
- 1 gram
- Calibrated, so it's easy to measure small amounts.
- Potency
- By batch
- Strain specific. Check the front label of your package.
- Onset when eaten
- 30 min–2 hrs
- Like any edible, wait at least 2–3 hours before taking more.
More detail in our serving size and tolerance guide.
Proof you can check
Every batch tested by SC Labs
Before any batch of Full Spectrum Oil (RSO) reaches a dispensary, the finished product is tested by SC Labs, an independent, state-licensed lab. 15 batches tested in 2026, every one passed. Look up your batch number to see its results.
- PotencySo the label matches the bottle
- PesticidesDozens of pesticides and growth regulators
- Heavy metalsArsenic, cadmium, lead and mercury
- Residual solventsNothing left from extraction
- MycotoxinsToxins produced by molds
- MicrobialsHarmful bacteria and molds
Questions
Full Spectrum Oil (RSO) FAQ
Will Full Spectrum Oil (RSO) get me high?
Typically, yes. Potency varies by batch, but the Indica and Sativa RSO are very high potency and should be used by experienced consumers. The CBD and 1:1 oils contain smaller amounts of THC but are still psychoactive. Check the front label and start with a very small amount.
What's in Full Spectrum Oil (RSO)?
Pure full spectrum cannabis oil. Vegan, gluten free, sugar free and cruelty free.
Where can I buy Full Spectrum Oil (RSO)?
At licensed California dispensaries and delivery services, for adults 21 and over. Use the Find Proof map to see who carries it near you.
Find Proof near you →Can I see the lab results for my batch?
Yes. Every batch is tested by SC Labs, an independent, state-licensed lab, and results for 2026 batches of Full Spectrum Oil (RSO) are online: find the batch number on your package and open it on the lab results page. For the full certificate of analysis (COA), send us the batch number and we'll email it.
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California dispensaries
Find Proof THC products near you
California law allows cannabis to be sold only by licensed retailers, in store or by delivery within the state. Search our live map of dispensaries and delivery services that carry Proof.