Science
Mechanism of Action
This extract functions as a potent antioxidant, primarily due to its high concentration of rosmarinic acid, flavonoids, phenolic acids, and terpenoids, which effectively neutralize free radicals. It exhibits anti-inflammatory and soothing actions, mitigating redness and irritation by reinforcing the skin's natural barrier. Furthermore, it demonstrates antimicrobial, antibacterial, and antifungal effects beneficial for clarifying blemished skin and promoting a balanced microbiome. Key components like rosmarinic acid specifically improve barrier function. Studies suggest it aids in skin renewal, enhancing elasticity, and offers protection against environmental stressors such as blue light and infrared damage.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 In an in ovo CAM assay, concentrations between 100-500 µg/mL effectively reduced thin capillaries, demonstrating anti-angiogenic properties. No vascular toxicity was observed at concentrations up to 1000 µg/mL.
- 02 In SKH-1 mice, the extract enhanced skin hydration and significantly decreased erythema and transepidermal water loss levels, though the specific topical concentration used for these effects was not stated.
- 03 An in vitro study reported an IC50 value of 309 µg dry MOL per extract mL for 50% inhibition of DPPH radical formation, confirming its antioxidant capacity.
Transparency
Dusting Analysis
While generally considered safe up to 5%, concentrations exceeding this threshold may lead to skin irritation, particularly for sensitive individuals, due to the presence of essential oil and fragrance components. It is not commonly dusted at low, ineffective percentages, but rather poses a risk at high concentrations.
The Formula
Formulation
Stability
The antioxidant activity of the extract can be influenced by temperature and pH fluctuations, requiring careful formulation to maintain efficacy.
Conflicts
- Concentrations above 5% may induce irritation, especially in sensitive skin, due to the inherent essential oil and fragrance components.
- The volatile compounds within Melissa officinalis oil have the potential to trigger skin irritation and sensitization, which could lead to allergic contact dermatitis.
Safety
Safety Profile
Melissa Officinalis Leaf Extract is generally recognized as safe (GRAS) by the FDA for flavoring and has shown no toxicity in healthy human keratinocytes at concentrations up to 1000 µg/mL. However, due to its essential oil content, patch testing is highly recommended for all users, particularly those with sensitive skin, before full application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Melissa Officinalis Leaf Extract is a valuable ingredient, offering broad antioxidant, anti-inflammatory, and hydrating benefits for diverse skin types, provided it is formulated within its recommended concentration limits to avoid potential irritation.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources