Science
Mechanism of Action
Rosa Gallica Callus Extract exerts its beneficial effects through a rich profile of active compounds, including phenolics, flavonoids, tannins, and anthocyanins. Its potent antioxidant activity neutralizes free radicals, safeguarding skin from environmental aggressors. Anti-inflammatory properties are demonstrated by reducing UV-induced COX-2 and cytokine expression, alongside attenuating MAPK signaling pathways (MKK4-JNK, MEK-ERK, MKK3-p38). For anti-aging, it stimulates collagen production, thereby enhancing skin elasticity and diminishing the appearance of wrinkles, while also suppressing matrix metalloproteinase-1 (MMP-1). Skin hydration is significantly enhanced by increasing HAS2 and hyaluronic acid levels, potentially mediated through the GLK signaling pathway. Furthermore, the extract contributes to skin brightening and improved tone by inhibiting tyrosinase activity and melanin synthesis, which helps to reduce dark spots and hyperpigmentation.
Research
Clinical Evidence
Medium confidence0.005%
Key findings
- 01 Clinical studies on *Rosa gallica petal extract* (RPE) demonstrated significant improvements in skin hydration, notably increasing HAS2 and hyaluronic acid levels in human skin and keratinocytes.
- 02 An aqueous 50% (v/v) EtOH extract of *Rosa gallica petal*, at a concentration of 50 µg/mL, significantly suppressed tyrosinase activity, melanin production, and solar UV-induced matrix metalloproteinase-1 (MMP-1). This concentration also exhibited the strongest antioxidative effect, indicating notable anti-skin aging and skin whitening benefits.
Transparency
Dusting Analysis
Robust scientific understanding of its mechanism and supporting data (primarily from related petal extracts) suggests that this ingredient is not commonly 'dusted' or overhyped without merit.
The Formula
Formulation
Stability
Rosa Gallica Callus Extract exhibits a mixed solubility profile, containing both water-soluble components (e.g., hydrolates) and potentially oil-soluble essential oils, phenolic compounds, organic acids, proteins, and polypeptides. Optimal extraction for anti-aging and antioxidative effects from *Rosa gallica petals* was achieved with 50% ethanol, suggesting solvent choice impacts component profiles.
Conflicts
- Volatile organic compounds, such as citronellol and phenylethyl alcohol, commonly present in *Rosa gallica flower extract*, can cause skin irritation (redness, itching, dryness, tightness) at concentrations between 1.0% and 3.0%.
- Fragrance allergens, specifically citronellol and geraniol derived from *Rosa gallica*, are subject to EU Cosmetics Regulation labeling requirements if their concentration exceeds 0.001% in leave-on products or 0.01% in rinse-off products.
Safety
Safety Profile
While a specific CIR review for ROSA GALLICA CALLUS EXTRACT is not available, related *Rosa centifolia callus culture extract* has been reviewed. *Rosa gallica L.* flower extracts are recognized as Generally Recognized As Safe (GRAS) by the FDA for food use and deemed safe for cosmetic applications by the EU in moderate doses. However, the presence of volatile organic compounds in *Rosa gallica flower extract* may pose a moderate risk of skin irritation at higher concentrations (1.0%-3.0%) and necessitates careful consideration of allergen labeling in finished cosmetic products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rosa Gallica Callus Extract is a valuable, multi-functional ingredient providing advanced hydration, potent antioxidant defense, anti-aging benefits, and skin brightening, though precise formulation is essential to manage potential irritation from naturally occurring volatile compounds.
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