Science
Mechanism of Action
This extract delivers a broad spectrum of benefits through its diverse composition. It is densely packed with antioxidants, including polyphenols (such as anthocyanins, ellagic acid, flavonoids, and tannins), and essential vitamins (C, E, A), which collectively neutralize free radicals and mitigate oxidative stress induced by UV radiation and environmental pollutants. Its anti-inflammatory properties effectively soothe skin, reducing redness and irritation. As an emollient, it reinforces the skin's natural barrier and ensures optimal hydration, resulting in a smoother, softer complexion. In terms of anti-aging, the extract promotes collagen synthesis, enhancing skin firmness and elasticity, thereby minimizing the appearance of fine lines and wrinkles. It can also inhibit enzymes associated with skin discoloration and loss of structural integrity. Specifically, Rubus ursinus fruit extract contains natural alpha-hydroxy acids (AHAs) for gentle chemical exfoliation, removing dead skin cells to reveal a brighter, more even skin tone. Rubus idaeus fruit extract contributes enzymatic exfoliation via its Vitamin C content, further promoting radiance. Additionally, Rubus ursinus possesses natural antibacterial qualities, assisting in the control of acne-causing bacteria and regulation of sebum production.
Research
Clinical Evidence
Medium confidence0.3-10%
Key findings
- 01 Rubus ursinus fruit extract is incorporated into cosmetic formulations typically between 0.5% and 5%.
- 02 Rubus idaeus fruit extract is widely recommended by suppliers for cosmetic applications in concentrations ranging from 0.3% to 10%.
- 03 Pilot in vitro and in vivo studies showed blackberry extract (Rubus fruticosus) at 10-20% was effective in reducing UVB-induced oxidative damage and inflammation.
- 04 Blackberry seed oil (BSO) at 100 µg/mL significantly boosted in vitro collagen production in human fibroblasts by 170%, with nanoencapsulated BSO (NCBSO) increasing it by 200% compared to untreated cells.
Transparency
Dusting Analysis
The effective concentrations for this ingredient are well-documented across a practical range for cosmetic applications, indicating it is not typically 'dusted' in formulations.
The Formula
Formulation
Stability
Rubus fruit extracts, particularly Rubus fruticosus, exhibit optimal stability within an acidic pH range of 3.5-4.5.
Conflicts
- Due to its tannin content, Rubus idaeus (raspberry) extract may potentially cause irritation in very sensitive skin.
Safety
Safety Profile
No specific CIR (Cosmetic Ingredient Review) assessment has been conducted for 'RUBUS IDAEUS/URSINUS FRUIT EXTRACT' as a combined ingredient. Raspberry (Rubus idaeus) fruit extract is generally considered gentle, non-irritating, and non-comedogenic for most skin types. However, a potential for irritation exists in very sensitive individuals due to its natural tannin content. Blackberry (Rubus fruticosus) fruit extract is recognized by the FDA as a flavoring agent or adjuvant. A patch test is recommended for individuals with known berry allergies or heightened skin sensitivity to ensure compatibility.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This combined fruit extract is a valuable, multi-functional ingredient, leveraging its rich antioxidant, soothing, hydrating, and gentle exfoliating properties to address a wide range of skin concerns across all skin types.
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