Omega-7 — answers to palmitoleic acid
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A monounsaturated fatty acid, most often supplied in supplements as an extract from sea buckthorn berries or from macadamia or anchovy oil. "Omega-7" is a marketing name for palmitoleic acid rather than an official nutrient category.
Why it’s used
Taken by some for perceived support of skin, mucous membrane moisture, or lipid levels.
What the evidence says
Some small clinical studies exist on sea buckthorn oil, a specific source of omega-7, in relation to skin and eye moisture, but these examine the whole oil rather than isolated palmitoleic acid, and sample sizes tend to be small. There is no major regulatory or systematic-review body evaluation of isolated omega-7/palmitoleic acid as a supplement ingredient that could be located here.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 5 records · searched August 2026
"Omega-7"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 201 records · searched August 2026
"Omega-7"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Evidence on sea buckthorn oil specifically appears to exist, but could not be verified here to a citable source distinguishing it from isolated palmitoleic acid. A reviewer looking to resolve this should search for sea buckthorn oil trials on tear film or skin barrier outcomes, rather than generic "omega-7" research.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.