The research

We read the studies.
Honestly.

Every claim here is graded by how strong the evidence actually is — and linked to the source so you can check it yourself. Where the science is thin, we say so.

900+
Studies read
29
Oils graded
4
Honest grades
100%
Linked to PubMed
Four grades. No spin.

Tap a grade to see what it means. We never call something proven when it isn’t.

ModerateControlled human trialsRepeated studies in people point the same way.
EarlySmall / lab / animalPromising signals, but not yet proven in people.
TraditionalLong-usedCenturies of use; clinical evidence still anecdotal.
NoneNo trials foundWe looked and found none. We won’t pretend otherwise.
Explore the evidence

Filter by oil, concern or proof strength — every card links to its study.

Oil
Concern
Grade
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No oils match that combination.

Deep dives: read the full evidence per oil — Rosemary · Moroccan Argan · Cold-Press Jojoba · Peppermint.

Browse the full study index →

Study counts reflect our internal research database (900+ graded study citations across the range; 500+ unique papers linked by PMID). Figures are honest tallies, not marketing claims; individual uses link to PubMed.

How we grade

No clever wording. We read what exists, weigh how strong it is, and link the source.

We read the literature

Real papers from PubMed and clinical databases — not blog posts. 900+ study citations across the range and counting.

We weigh the strength

A human trial outranks a mouse study, which outranks a lab dish. The grade reflects that hierarchy — honestly.

We link the source

Every use links to the actual study. If we found nothing, we grade it None — and say so out loud.

Questions, answered straight
Why grade your own products "Early" or "None"?+
Because it’s true. A carrier oil can be excellent without a stack of trials behind it. We’d rather tell you exactly where the evidence stands than inflate a claim and lose your trust.
What counts as "Moderate" evidence?+
Repeated, controlled studies in actual people pointing the same way — like the acne and headache work behind Tea Tree and Peppermint. It’s our highest grade; we don’t use the word "proven."
Where do the study counts come from?+
Our internal research database — an honest tally of the papers we’ve read per oil — 900+ graded citations, 500+ unique papers linked by PMID. They’re a measure of how much we’ve looked, not a marketing number.
Can I read the studies myself?+
Please do. Every individual use links straight to PubMed. Open a card, find the claim that interests you, and click through.
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