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That profile makes it a classic emollient; it works by hanging out with the skin's surface lipids, softens, and slows down water loss.

The most cited study on it was done on skin cells in a dish where this oil got them to make more of the building blocks for collagen while also slowing down the enzyme that breaks collagen down. Researchers tested this on human skin too; it didn't cause irritation and helped skin hold onto moisture better.

Another study done on cells and mice found this oil quieted down some of the body's inflammation signals.

These studies are still small, early, and not done on humans, so it's best to think of this ingredient as a great supporting ingredient for the rest of your routine and not the main active.

Concentrations can range from 1-5% in serums to 100% as a single face oil (how it's most traditionally used).

Because this ingredient is a triglyceride of long-chain fatty acids, this ingredient may not be Malassezia safe.

Allergies to this protein are quite rare as the refined seed oil contains very little residual protein. Human irritation testing also came back clean. But it is a plant and as with any botanical ingredient, contact allergy is possible.