Grapeseed Oil
Also known as: Vitis vinifera seed oil, GSO, grape seed oil
Effective Dosage
No established dose
What the Science Says
Grapeseed oil is a plant-derived oil pressed from grape seeds, rich in polyunsaturated fatty acids (mainly linoleic acid, an omega-6 fat). When applied topically in a specialized nanoemulgel formula, a small 15-person study found it improved skin moisture, elasticity, and reduced pore size and redness over 12 weeks. As a dietary fat, it performed similarly to other vegetable oils in studies measuring blood sugar and triglyceride responses after meals, with no standout advantage over alternatives like olive oil.
What It Doesn't Do
Won't burn belly fat — the one study using grapeseed oil as a massage carrier showed no fat-loss effect; the active ingredient was the aromatherapy blend, not the oil. No evidence it detoxifies the body. No proof it meaningfully reduces inflammation when eaten. Not shown to outperform other cooking oils for heart health. The skin benefits seen in studies used a specialized nano-formulation, not plain grapeseed oil from a bottle.
Evidence-Based Benefits
Grapeseed oil is a plant-derived oil pressed from grape seeds, rich in polyunsaturated fatty acids (mainly linoleic acid, an omega-6 fat). When applied topically in a specialized nanoemulgel formula, a small 15-person study found it improved skin moisture, elasticity, and reduced pore size and redness over 12 weeks. As a dietary fat, it performed similarly to other vegetable oils in studies measuring blood sugar and triglyceride responses after meals, with no standout advantage over alternatives like olive oil.
Weak EvidenceEffective at: No established dose
Source: auto-research
Absorption & Bioavailability
Unknown for oral supplementation. Topical absorption depends heavily on formulation — the studied nanoemulgel is not equivalent to plain oil applied to skin.
Red Flags to Watch For
- High in omega-6 linoleic acid — excessive intake may worsen omega-6 to omega-3 imbalance in typical Western diets
- Heating grapeseed oil to cooking temperatures (180°C) significantly increases aldehyde production, which are potentially harmful volatile compounds
- Most positive skin studies used specialized nano-formulations, not standard grapeseed oil — product labels rarely disclose this distinction
- Only 1 small human skin study (n=15) supports topical claims; results cannot be broadly generalized
- Used as a placebo/carrier oil in several studies, suggesting researchers consider it largely inert for many claimed benefits
Products Containing Grapeseed Oil
See how Grapeseed Oil is used in these analyzed products:
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-09