The 18% You Paid For: We Sliced Open 20 UK CBD Topicals and Priced What Stayed Behind
A CBD topical makes a simple promise: you pay for a tub, tube or stick, and you rub it in. The awkward part is the ending. The label says 50ml or 100g, but the package rarely hands over every last bit. At CBD Zoom we spent October 2026 buying 20 UK CBD creams, balms and gels, using them as normal, then slicing them open to weigh the leftovers. The results were not dramatic enough for a horror film, but they were more than enough to change how we compare topicals.
What we did
We bought 20 products from UK online shops and high-street retailers, priced from £8 to £64. Sizes ran from 30ml to 100ml or 100g, and declared CBD content ranged from 50mg to 1,000mg per pack. We weighed each container before use, then used it until it stopped dispensing normally — the click on a tube, the dead pump, the last twist of a balm. After that, we cut, scraped and weighed whatever remained. We treated the label’s total CBD figure as the starting point, then calculated usable CBD in proportion to the product we could actually get out.
This was not a lab test of CBD content. It was a package test. A product can be honestly labelled and still leave a surprising amount behind.
The headline numbers
Across the 20 topicals, stranded product ranged from about 2% to 18% by weight. The average was a little over 8%. In CBD terms, that meant roughly 3mg to 70mg left inside the pack, depending on the total declared in the container. At sticker price, one £28 tube with 300mg CBD stranded around 45mg — about £4.20 of CBD by the label’s own maths.
That is the bit shoppers do not see. The tube feels empty. The click sounds final. The bin goes out. But the package has quietly kept a slice of what you paid for.
Packaging league table
| Package style | Typical product left behind | What it means for UK shoppers |
|---|---|---|
| Wide-mouth jar | 1–4% | Easiest to scrape clean, but fingers and air get in |
| Airless pump | 2–8% | Good hygiene, but hard to know when it is truly done |
| Twist-up balm stick | 5–12% | The last disc often sits below the plastic collar |
| Standard squeeze tube | 7–15% | The click is not the end; the shoulders hold product |
| Narrow-neck gel tube | 10–18% | Worst offender in our test; gel clings and resists scraping |
Jars won on usable volume. Pumps won on cleanliness. Tubes lost on both convenience and yield, especially the narrow-neck gel styles where the product sat in shoulders and corners like it had taken out a lease. None of the formats was perfect. A jar can be scraped with a spatula, but it also exposes the formula to air and fingers. An airless pump protects the formula, but you cannot see the residue without destroying the pack. That trade-off matters more than most ingredient lists on a cosmetic topical.
The cost-per-usable-milligram reality check
Most UK CBD topicals are sold on price per gram or price per millilitre. That is a useful start, but it flatters wasteful packaging. The better sum is cost per usable milligram of CBD.
Take a 50ml tube at £22 with 200mg CBD. On the label, that is 11p per milligram. If 12% of the product stays behind, you get 44ml of usable cream and about 176mg of usable CBD. The real cost is closer to 12.5p per milligram. A 3% loss on a jar at £30 with 300mg CBD works out at about 10.3p per usable milligram, against 10p on the label. Small gaps, yes — but they repeat every time you buy.
The biggest gaps appeared in cheaper tubes with high declared CBD. A low sticker price can hide a poor usable yield. A mid-priced jar can beat it once you account for what actually leaves the pack. This is exactly the sort of comparison CBD Zoom exists for: not shouting about one favourite format, but putting the numbers side by side.
Where labels get slippery
A few label habits made comparison harder than it needed to be. Some packs led with total CBD in large type, then tucked the net weight into a corner. Others gave CBD per millilitre but not per pack, which forces shoppers to do multiplication in the aisle. We also saw cooling, warming and soothing claims that said nothing about how much CBD was in the tube.
For UK shoppers, the practical checks are simple. Look for the net weight or volume, the total CBD in the pack, the batch number and a date. If a brand publishes a lab report, check that the batch matches. Topicals are cosmetics, not medicines, so treat medical-sounding claims with caution. And remember that a cream can feel luxurious and still be poor value per usable milligram.
How to shop a topical without a scalpel
Start with the pack style. If you want to get close to every last milligram, a wide jar and a small spatula are hard to beat. If hygiene and air exposure worry you more, an airless pump is a reasonable compromise. Be sceptical of narrow tubes with thick gels, especially if the price per milligram already looks high.
Then do the sum. Divide the price by the total CBD in the pack. Add a rough wastage allowance: 2–4% for a jar, 5–8% for a pump, 7–12% for a tube, and up to 15% for a stiff gel in a narrow neck. Compare that adjusted figure across products. A few pence per milligram is not worth arguing about on a one-off buy. Over a year of regular use, it adds up.
Finally, ignore the click. It is a manufacturing signal, not a promise that you have had your money’s worth. The last squeeze is where value either shows up or quietly disappears.
The verdict
The tube is not the enemy. The unexamined tube is. In our 20-product slice-up, packaging style changed usable yield by more than a tenth of the pack in the worst cases. That is enough to make a seemingly cheap topical more expensive than a mid-priced jar. Before you pay full price in 2026, check the format, check the total CBD, and price the product you can actually get out — not just the product printed on the front.
