Science
Mechanism of Action
This potent ingredient exerts its benefits through multiple cellular pathways. It effectively increases hyaluronic acid content within the dermis and epidermis, which in turn enhances the extracellular matrix structure, promoting skin flexibility, firmness, and superior moisture retention. Rich in essential fatty acids (palmitic, stearic, oleic, linoleic, and alpha-linolenic acids), it plays a crucial role in maintaining the epidermal hydrolipidic film and supporting skin healing. It functions as a powerful antioxidant, actively neutralizing free radicals and mitigating damage from environmental stressors. Furthermore, it reduces inflammation by activating the Nrf2/HO-1 pathway and inhibiting NF-κB and p38 MAPK kinases, which helps soothe irritated skin and combat UVB-induced injury. Crucially, it induces the expression of genes involved in DNA protection (GADD45α) and repair (SIRT-1). An oil-soluble variant has also demonstrated the ability to upregulate genes responsible for skin hydration, including aquaporin 3, filaggrin, involucrin, and hyaluronic acid synthase, while stimulating glucocerebrosidase for enhanced ceramide production and increasing extracellular matrix components.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Significantly reduced oxidative stress induced by reactive oxygen species (ROS) in cultured fibroblasts.
- 02 Demonstrated reduction of oxidative stress induced by ROS in cultured fibroblasts.
- 03 Induced a substantial 60% increase in SIRT-1 gene expression in fibroblasts, indicating enhanced DNA protection and repair.
- 04 Also induced a 60% increase in SIRT-1 gene expression in fibroblasts, highlighting efficacy at very low concentrations for DNA repair.
- 05 Enhanced skin hydration by inducing genes for aquaporin 3, filaggrin, involucrin, and hyaluronic acid synthase, stimulated ceramide production via glucocerebrosidase, and increased extracellular matrix components in cultured keratinocytes and fibroblasts. This extract also showed significant hydrating capacity on human skin in vivo.
Transparency
Dusting Analysis
Rubus Idaeus Leaf Cell Culture is a multi-functional active ingredient with robust scientific backing for its roles in hydration, antioxidant protection, and cellular repair, making it a valuable component rather than a 'dusting' ingredient.
The Formula
Formulation
Stability
This ingredient exhibits stability across a pH range of 4.0 to 8.0 and can withstand temperatures up to 70°C. For optimal integration, it should be added during the cooling phase or at the final stage of formulation. Its hydrophilic nature restricts its incorporation into highly hydrophobic systems such as lipogels, synthetic oils, and silicones, but it is easily miscible in polar or weakly polar solvents.
Conflicts
- highly hydrophobic systems (e.g., lipogels, synthetic oils, silicones)
Safety
Safety Profile
Rubus Idaeus Leaf Cell Culture has not undergone formal safety assessment by the Cosmetic Ingredient Review (CIR) or the European Scientific Committee on Consumer Safety (SCCS). It is generally recognized as a skin conditioning agent in cosmetic formulations. A component related to Rubus idaeus leaf extract, 1,8-cineole, is FDA approved for food use and holds GRAS (Generally Recognized As Safe) status. SkinSAFE identifies this ingredient as 'Irritant Free' and suitable for 'Baby SAFE' and 'Eyelid SAFE' applications, indicating a low risk for irritation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rubus Idaeus Leaf Cell Culture is a valuable multi-functional ingredient, offering significant benefits in hydration, antioxidant defense, and cellular repair, making it highly compatible with all skin types for comprehensive skin health improvement.
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