Lecythis Minor Seed Oil

Lecythis Minor Seed Oil is a plant-derived emollient oil typically used at a few percent up to higher levels in moisturizers to improve barrier feel and reduce TEWL, and oils of this type are generally low in immediate irritancy. However, seed oils can still trigger irritation in highly reactive/eczema-prone patients via individual intolerance, oxidation byproducts, or trace botanical constituents, so it is not truly “inert.” With limited ingredient-specific clinical patch-test data available, I score it as gentle but not risk-free for compromised skin. Safety Notes: Lecythis minor seed oil is a niche botanical oil most commonly encountered in commercial leave-on skincare (creams/lotions/serums) as a minor emollient or marketing-active at trace levels, with lowest observed uses around 0.001–0.01% in multi-ingredient blends/fragrance-supporting lipid phases. At the high end, consumer-available “single-ingredient”/carrier oils and facial oils can be marketed as 100% seed oil, and oil-rich balms can approach similarly high levels when it is the primary oil. No specific EU/FDA concentration cap is typically set for non-restricted vegetable oils; practical limits are driven by sensory, oxidation stability, and cost rather than regulation.