What are the main fatty acids in this oil and why do they matter?

The oil is cold-pressed from Oenothera biennis seeds and its value comes from a distinctive fatty acid composition. Linoleic acid makes up a significant portion; it is an essential omega-6 fatty acid that the skin cannot synthesize and that integrates into the lipid matrix of the stratum corneum, supporting barrier integrity and reducing transepidermal water loss. Gamma-linolenic acid (GLA) is a less common omega-6 derivative that further contributes to the skin’s lipid balance and is often associated with improved suppleness in dry or mature skin. Together, these components help the skin feel softer and less “paper-like” after washing or environmental stress. The oil is fragrance-free and contains no added preservatives, so the fatty acid profile is the primary active factor.