The Cause
Where the 10% actually goes
Our pledge in full: what 10% of a sale is, how we choose who receives it, and how to check a research charity before anyone gives it money.
Every tee and every print on this site carries the same commitment: 10% of the sale price funds psychedelic therapy research. This page explains exactly what that means, because a percentage on a homepage is easy to print and easy to fudge.
What the 10% is calculated on
Ten percent of the sale price of the piece, not 10% of profit. Profit is a number a business defines for itself, which makes any pledge based on it unverifiable from the outside. Price is a number you can see. On a £32 tee, the pledge is £3.20, and every product page tells you the figure for that item before you buy.
Stem & Cap launched in the summer of 2026 and we are early. We will publish what has been given, and to whom, once the first donation cycle completes. We would rather show you an empty page now than a number we have decorated.
How we choose where it goes
The obvious answer, "give it to psychedelic research", turns out to be harder than it sounds, because this field has an unusually tangled relationship between charity and industry. A few real examples, all matters of public record.
MAPS, the non-profit that carried MDMA research for decades, created a for-profit subsidiary to take the drug through approval; that company became Lykos Therapeutics and, after the FDA declined its application in 2024, was restructured and renamed. The Beckley Foundation is a registered UK charity; Beckley Psytech is a separate for-profit drug developer that is now part of a publicly listed pharmaceutical group. Compass Pathways, which is running the largest psilocybin trials in the world, is a commercial company answerable to shareholders. Imperial College London's Centre for Psychedelic Research lists both charitable trusts and commercial companies among its funders.
None of that is scandalous. Getting a medicine through regulatory approval costs more than philanthropy can raise, so commercial capital is doing necessary work. But it means a donor has to be deliberate. Funding a non-profit research centre and funding drug development are different acts, and some organisations do both.
The checks we apply, and you can too
Four of them, and they are not specific to this field.
Confirm the registration with the right regulator. England and Wales charities appear on the Charity Commission register; Scottish ones on OSCR; American non-profits on the IRS list, searchable through ProPublica's Nonprofit Explorer. A charity number in a website footer is a claim, not proof.
Check the filings are current. Registers show overdue accounts, and an organisation behind on its reporting is worth a conversation before it is worth a cheque.
Check what the organisation actually is. Some run research. Some fund it. Some are networks of large donors that do not want unsolicited gifts at all. All three describe themselves in similar language.
Check for commercial affiliates, and what financial interest the non-profit holds in them.
Watch for name collisions too. Searching "Beckley Foundation" returns an Oxford psychedelic research charity, an unrelated American children's cancer foundation and a West Virginia community foundation. Make sure any donation link resolves where you think it does.
Who is in front of us
We are still finalising recipients, and we would rather name them once, accurately, than announce partnerships we have not confirmed. The organisations we are looking hardest at are UK-based or UK-relevant and non-commercial: Imperial College London's Centre for Psychedelic Research, which runs clinical trials here and has a named development contact who can account for how funds are used, and Drug Science, the independent science-led drugs charity founded by Professor David Nutt.
When money moves, this page gets the date, the amount and the recipient. That is the whole promise, and it is deliberately boring, because the interesting version of this promise is the one that turns out not to be true.


