Science
Mechanism of Action
This ingredient primarily functions as an antioxidant, with its activity largely stemming from flavonoid constituents such as kaempferol and quercetin. These compounds actively scavenge free radicals, thereby mitigating oxidative stress within the skin. It may additionally impart astringent properties to refine skin appearance and provide emollient effects, enhancing skin's softness.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Research on Rosa wichuraiana extracts, specifically from its fruit and flower components, indicates significant antioxidant capabilities. The ethyl acetate fraction of the fruit extract demonstrated strong DPPH free radical scavenging activity with an IC50 of 0.08 mg/mL.
- 02 The ether fraction of the flower extract showed an IC50 of 0.09 mg/mL for DPPH scavenging activity.
- 03 At a concentration of 100 µg/mL, the ethyl acetate fraction of the flower extract achieved 83.04% DPPH radical scavenging, a performance greater than BHT.
- 04 The ether fraction of the flower extract exhibited 69.70% DPPH radical scavenging activity at 50 µg/mL.
- 05 High superoxide anion radical scavenging activity was also observed in the ethyl acetate fraction of the fruit extract (IC50: 0.08 mg/mL) and the ether fraction of the flower extract (IC50: 0.09 mg/mL). It is important to note that these specific clinical concentrations and results pertain to Rosa wichuraiana fruit and flower extracts; direct comparable data for the stem extract at these precise concentrations are not explicitly available in the provided studies.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While a specific optimal pH for Rosa Wichuraiana Stem Extract is not defined, related rose extracts containing anthocyanins generally demonstrate enhanced stability in acidic environments (e.g., pH 1-4) and may be less stable at neutral or alkaline pH levels. To preserve efficacy, the extract should be protected from light and stored at controlled temperatures not exceeding 30 °C.
Safety
Safety Profile
Although a dedicated CIR assessment for Rosa Wichuraiana Stem Extract is not available, the CIR Expert Panel has deemed Rosa centifolia-derived ingredients, including its stem extract, as safe for cosmetic use when formulated to be non-sensitizing. The FDA generally recognizes essential oils and natural extracts from other Rosa species (e.g., Rosa centifolia, Rosa damascena) as GRAS for food applications. Formulators should be mindful of potential sensitizing compounds like citronellol and geraniol, which are common in various rose extracts, and ensure the final product is non-sensitizing.
Your Skin
Skin Compatibility
Our Assessment
Verdict
ROSA WICHURAIANA STEM EXTRACT offers valuable antioxidant protection through its flavonoid content and may contribute astringent and emollient benefits, though specific clinical efficacy data at precise concentrations for the stem extract itself remains limited in the provided research.
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