Science
Mechanism of Action
Oenothera Biennis Leaf Cell Extract exerts its beneficial effects through a rich composition of omega-6 fatty acids, including linoleic acid and gamma-linolenic acid (GLA), alongside other antioxidants. GLA and its metabolite dihomo-γ-linolenic acid (DGLA) serve as precursors for anti-inflammatory eicosanoids, effectively suppressing inflammatory mediators like interleukin 1β (IL-1β), interleukin 6 (IL-6), and tumor necrosis factor α (TNF-α), while also inhibiting leukotriene A4 production. It reinforces the skin's lipid barrier, thereby reducing transepidermal water loss (TEWL) and regulating epidermal keratinization, which collectively boosts moisturization, softness, and elasticity. Furthermore, the extract supports anti-aging mechanisms by increasing MYLK gene expression, which promotes matrix collagen contraction, actin polymerization, and the production of essential extracellular matrix (ECM) proteins, leading to improved wrinkle appearance. It also protects the skin from environmental damage by inhibiting reactive oxygen species (ROS) formation, preventing cellular harm, and enhancing cell proliferation.
Research
Clinical Evidence
Medium confidence0.006%
Key findings
- 01 At a concentration of 0.006%, the extract significantly improved skin mechanical properties, including reduced stiffness and rigidity. It also demonstrated potent antiproliferative and pro-apoptotic activity against human melanoma cell lines, hindering their migratory potential, with no observed cellular toxicity at concentrations up to 0.01%.
Transparency
Dusting Analysis
Clinical efficacy in improving skin mechanical properties and exhibiting anti-melanoma activity was observed at a precise concentration of 0.006%. Therefore, formulations containing this extract below this specified threshold may not deliver the full spectrum of claimed benefits.
The Formula
Formulation
Stability
This water-soluble extract from cell cultures was successfully prepared and demonstrated stability at a pH of 7.4.
Safety
Safety Profile
Generally considered tolerable and non-allergenic, exhibiting a good safety profile. Clinical studies have confirmed its safety up to 0.01% in cellular models and at high oral doses in animal studies (2000 mg/kg acute, 200-400 mg/kg sub-acute). While regulatory bodies like the European Cosmetics Regulation permit its use within recommended concentrations, a preliminary skin patch test is advisable for individuals with known plant allergies to mitigate potential mild irritation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Oenothera Biennis Leaf Cell Extract is a valuable, multi-functional ingredient that significantly improves skin's mechanical properties and offers robust antioxidant and anti-inflammatory benefits at clinically relevant low concentrations, enhancing overall skin health and resilience.
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