Science
Mechanism of Action
This extract functions through a multifaceted approach, providing anti-inflammatory effects to calm irritated skin. Its antimicrobial properties are evident in its ability to protect against bacterial and fungal infections, having demonstrated activity against common skin pathogens such as S. epidermidis, S. aureus, and P. acnes. Furthermore, the rich content of flavonoids and phenolic compounds confers significant antioxidant benefits, shielding the skin from free radical damage. Preliminary animal studies also indicate a potential for promoting wound healing.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 A 5% methanol extract significantly healed wounds in rats, potentially due to alkaloids and terpenes.
- 02 An ethanolic leaf extract showed concentration-dependent DPPH radical scavenging activity (8.48% at 10 µg/mL to 19.37% at 400 µg/mL), with an IC50 of 160.09 µg/mL.
- 03 The extract at 100 µg/mL exhibited high inhibition (89–96%) on aldehyde oxidase activity.
- 04 50%, 70%, and 90% ethanolic extracts demonstrated moderate bactericidal activity against skin pathogens like S. epidermidis, S. aureus, and P. acnes in vitro, with MIC/MBC values ranging from 1.38-2.86 mg/mL.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This extract typically appears as a greenish to brownish liquid, characterized by a distinct herbal aroma. Its water solubility makes it highly suitable for incorporation into water-based cosmetic formulations, such as toners, serums, and creams.
Conflicts
- Sun exposure, due to the presence of phototoxic furanocoumarins (e.g., psoralens and bergapten) which can lead to photodermatitis.
- Concomitant use with other problematic or phototoxic ingredients, as this increases irritation risk and necessitates even lower usage levels.
Safety
Safety Profile
While generally considered safe for cosmetic and personal care products, the extract contains phototoxic furanocoumarins, particularly bergapten. The International Fragrance Association (IFRA) recommends that for products applied to skin exposed to sunshine, the total bergapten level should not exceed 0.0015% (15 ppm). Additive effects from other phototoxic ingredients must be carefully considered.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While Ruta Graveolens Leaf/Root/Stem Extract offers promising anti-inflammatory, antimicrobial, and antioxidant properties, its significant phototoxicity and high irritancy risk demand exceptionally stringent formulation controls and strict adherence to concentration limits, making its overall cosmetic utility highly questionable for broad, safe application.
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References
Sources