Science
Mechanism of Action
This extract exerts its effects by enhancing cellular oxygenation and acting as a powerful antioxidant to neutralize free radicals. It stimulates the natural cellular renewal process, facilitating the removal of dead skin cells, and reinforces the skin's barrier function through keratin production. Furthermore, it significantly reduces inflammation, particularly that induced by UVB rays, by inhibiting key inflammatory mediators such as IL1-alpha, IL-6, and PGE2. Its emollient properties also contribute to a smoother, softer skin texture.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 A formulation incorporating 375,000 native cells demonstrated a comprehensive range of benefits, including stimulated cellular renewal, effective removal of dead cells, strengthened skin barrier function, reduced inflammation, improved complexion evenness, revived skin radiance, reduced pigmentation defects, and enhanced oxygenation of skin cells.
- 02 In vitro testing revealed robust antioxidant activity, with 100 µg/ml of the extract exhibiting an antiradical capacity of 72 µg/ml.
Transparency
Dusting Analysis
Rosa Alba Leaf/Stem Extract provides a range of distinct, clinically observed benefits, including significant antioxidant activity at 100 µg/ml and comprehensive skin improvements at cellular levels. These demonstrated effects confirm its active ingredient status, indicating it is not typically included as a 'dusted' ingredient for superficial marketing claims.
The Formula
Formulation
Stability
The extract may present aesthetic or stability challenges during formulation, which can limit its versatility. It is known to disperse effectively in sunflower oil. Extracts obtained via subcritical water extraction are characterized by a complex composition including essential oils, phenolic compounds, total carbohydrates, proteins, and simple sugars.
Conflicts
- Contraindicated for pregnant or breastfeeding individuals if the final product formulation contains specific essential oil components derived from the extract.
Safety
Safety Profile
While formal CIR, SCCS, or FDA safety status for ROSA ALBA LEAF/STEM EXTRACT is not established, related INCIdecoder data indicates 'No penalty' for ROSA ALBA LEAF CELL EXTRACT across all categories, and Paula's Choice rates the ingredient as 'Generally non-irritating' and an 'Outstanding active ingredient'. The essential oil from Rosa alba L. is described as having 'very low toxic potential'. However, it is imperative to note that certain volatile components naturally present in rose extracts, such as Citronellol and Geraniol, are classified as fragrance allergens in Europe and require labeling if their concentration exceeds 0.001% in leave-on products or 0.01% in rinse-off products. Although isolated components like geraniol and citral demonstrated cytotoxic and genotoxic effects in vitro at high concentrations (500-1000 µg/ml), essential oils and their components are generally considered safe at typical low cosmetic concentrations. Use by pregnant or breastfeeding individuals should be approached with caution if the product contains specific essential oil components.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rosa Alba Leaf/Stem Extract is a valuable, multi-functional botanical offering significant antioxidant and anti-inflammatory properties, promoting cellular renewal and a refined, radiant complexion suitable for all skin types.
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References
Sources