Science
Mechanism of Action
This ingredient functions via multiple distinct pathways to improve skin health: 1. **Antioxidant Protection:** Specific phenolic compounds, including rosarugosides A and D, effectively suppress reactive oxygen species (ROS) production in normal human dermal fibroblasts, thereby neutralizing free radical damage and mitigating environmental stress. 2. **Anti-inflammatory Properties:** It visibly reduces redness and inflammation, contributing to a calmer complexion. 3. **Skin Barrier Reinforcement:** Rosa Rugosa extract promotes keratinocyte differentiation, significantly increasing the expression of key barrier proteins such as FLG, IVL, LOR, and CLDN1, leading to a more resilient skin barrier. 4. **Anti-Aging Action:** Rosarugoside A has been observed to decrease Matrix Metalloproteinase-1 (MMP-1) secretion, while rosarugoside D specifically regulates procollagen type I α1 expression, both crucial for maintaining skin firmness and elasticity. Its natural Vitamin C content may also support collagen synthesis. 5. **Hydration & Toning:** It offers moisturizing benefits for soft, refreshed skin and acts as a mild, temporary astringent to minimize pore appearance. 6. **pH Balance & Antimicrobial Effects:** It assists in balancing skin pH and possesses antibacterial properties attributed to its natural aromatic alcohols.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Phenolic compounds, rosarugosides A and D isolated from Rosa rugosa flower bud extracts, demonstrated suppression of ROS production in TNF-α-stimulated normal human dermal fibroblasts (NHDFs) across concentrations from 0.03 µM to 100 µM. Rosarugoside D specifically reduced ROS production by 1.77 ± 0.12-fold at 0.03 µM and 1.41 ± 0.15-fold at 10 µM. Rosarugoside A significantly decreased MMP-1 secretion, and rosarugoside D regulated procollagen type I α1 expression, with no toxicity observed to NHDFs below 10 µM.
- 02 Rosa rugosa extract induced keratinocyte differentiation, notably increasing the expression of FLG, IVL, LOR, and CLDN1, which are vital components for strengthening the skin barrier function.
Transparency
Dusting Analysis
Rosa Rugosa Flower Water exhibits clearly defined mechanisms of action and clinically referenced benefits, including antioxidant protection, anti-aging effects, and skin barrier enhancement, suggesting it is a purposefully integrated ingredient rather than a 'dusting' component.
The Formula
Formulation
Stability
No specific optimal pH range for the stability of Rosa Rugosa Flower Water was identified. However, the presence of natural fragrant alcohols, such as 2-phenylethanol, may contribute to its inherent preservative qualities.
Conflicts
- May potentially cause irritation for super sensitive or acne-prone skin types due to its natural fragrant alcohol content. This is a general characteristic observed in some flower waters.
- Avoid direct contact with eyes.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has not specifically assessed Rosa Rugosa Flower Water. However, studies on isolated compounds from Rosa rugosa flower buds demonstrated no toxicity to normal human dermal fibroblasts at concentrations below 10 µM. While generally exhibiting low irritancy, highly sensitive or acne-prone skin should be monitored for potential irritation attributed to its natural fragrant alcohol content.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rosa Rugosa Flower Water is a valuable multi-functional ingredient, providing robust antioxidant protection, strengthening the skin barrier, and offering targeted anti-aging benefits with good general skin compatibility.
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