Grape seed oil is obtained from the small seeds inside grapes, often as a useful by-product of winemaking. Grapevines are cultivated widely for their fruit, while their seeds contain an oil used in cooking and cosmetic formulations. Grape seed oil is distinct from concentrated grape seed extracts, which are prepared by other methods. [1]
Rich in linoleic acid
The most distinctive feature of grape seed oil is its relatively high proportion of linoleic acid, an omega-6 polyunsaturated fatty acid. Studies of different grape varieties commonly find linoleic acid making up more than half of the oil's fatty acids, with oleic acid present in a smaller amount. Grape seed oil also contains naturally occurring tocopherols, members of the vitamin E family. [1,2]
Because it contains a high proportion of polyunsaturated fatty acids, protecting grape seed oil from oxidation is important when it is used in formulations.
Why linoleic acid matters to skin
Linoleic acid is an essential fatty acid: humans cannot manufacture it from scratch. It participates in the structure of certain skin-barrier lipids, particularly specialized ceramides that help the outermost skin layer limit water loss.
In a cosmetic blend, grape seed oil acts as an emollient, smoothing and conditioning the skin surface. Its linoleic-rich composition gives it a distinct place among botanical carrier oils. [1,2]
At Deschampsia
We use grape seed oil in Glow Serum, alongside other plant oils and infused botanicals.
