Hippophae Rhamnoides Seed Oil

Hippophae rhamnoides seed oil, also known as sea buckthorn seed oil, is pressed from the seeds of the sea buckthorn plant. It is rich in polyunsaturated fatty acids (PUFAs), particularly omega-3 and omega-6 fatty acids, which are structural components of skin cell membranes.In skincare formulations, this oil functions primarily as a skin protectant and hydrating agent. Its fatty acid profile is designed to support the skin barrier and help maintain moisture levels within the epidermis.

The mechanism centres on the oil's polyunsaturated fatty acid content. These PUFAs integrate into skin cell membranes and the lipid matrix of the stratum corneum, strengthening barrier integrity and reducing water loss. Research suggests the oil may also upregulate aquaporin 3 and hyaluronan synthase 2 expression—proteins involved in skin hydration at the cellular level.Additionally, the fatty acids present appear to offer some protection against UV-induced oxidative stress by maintaining redox balance in skin cells, though this evidence remains preliminary and should not be relied upon as …

Sea buckthorn seed oil is typically used as a component within moisturisers, serums, or standalone oils rather than as the sole product. If using a formulation containing this ingredient, apply to clean skin once or twice daily as you would any hydrating product. It can be layered with other skincare steps. Those new to plant oils should patch-test first, particularly if acne-prone.

Generally well-tolerated; no significant safety concerns have been reported in cosmetic use. However, as with any oil-based ingredient, those prone to fungal acne (malassezia) should monitor skin response, as some users report sensitivity to certain plant oils.