Science
Mechanism of Action
Houttuynia Cordata exerts its effects through a concentrated blend of polyphenolic flavonoids, including quercetin, quercitrin, rutin, and hyperoside. These compounds confer significant anti-inflammatory, antioxidant, and antibacterial properties. Quercitrin further offers photoprotection against UVB-induced cellular damage. The extract's inherent polysaccharides function as humectants, drawing and retaining moisture to enhance skin hydration. It actively regulates sebum production, thereby controlling blemishes, and demonstrates potent antimicrobial efficacy against acne-causing bacteria like *Cutibacterium acnes* and *Staphylococcus aureus*. Additionally, it mitigates inflammation by reducing nitric oxide production, exhibits anti-allergic capabilities beneficial for conditions such as eczema, and supports skin brightening by inhibiting melanin synthesis and tyrosinase activity. Its anti-aging actions involve neutralizing free radicals, inhibiting collagenase, elastase, and hyaluronidase enzymes, and enhancing fibroblast migration for improved skin repair and elasticity.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 A product formulated with 97.5% Houttuynia Cordata extract improved skin texture, reduced redness, tightened skin, and balanced sebum production.
- 02 Ethanolic (2.47 mg/mL) and aqueous (5.77 mg/mL) extracts demonstrated minimum inhibitory and bactericidal concentrations against *Cutibacterium acnes*.
- 03 At 1 mg/mL, both aqueous and ethanolic extracts significantly inhibited collagenase (28.33–46.00%), elastase (30.00–34.33%), and hyaluronidase (93.87–98.72%) activities, indicating anti-aging potential.
- 04 Houttuynia Cordata essential oil at 400 µg/mL enhanced fibroblast migration by 26.94% in wound healing models and showed no cytotoxicity up to 500 µg/mL.
- 05 Essential oil inhibited melanin synthesis (IC50 152.16-200.61 µg/mL) and tyrosinase activity (IC50 48.00 µg/mL), contributing to skin brightening.
- 06 Unspecified heartleaf extract significantly reduced mild to moderate inflammatory acne lesions after eight weeks of application.
Transparency
Dusting Analysis
The provided research does not indicate that Houttuynia Cordata Powder is commonly 'dusted' in formulations to misrepresent its concentration. The powder form is noted for its good fluidity and ease of storage.
The Formula
Formulation
Stability
Houttuynia Cordata extract in powder form exhibits good fluidity and is conducive to storage and transport. When formulated as an essential oil, oil-in-water emulsions demonstrate superior stability compared to gel formulations. Standardized extract tablets maintained uniformity and stability at room temperature, but hardness was observed to decrease following storage at 45°C.
Safety
Safety Profile
Houttuynia Cordata Extract is generally regarded as a safe ingredient in cosmetic applications and complies with European Union regulations. It is typically well-tolerated; however, individual sensitivities, allergic reactions, redness, or irritation are possible, rendering patch testing advisable. In vitro studies confirm non-cytotoxicity for ethanolic extract (HCE) up to 400 mg/mL and aqueous extract (HCA) up to 250 mg/mL on human keratinocytes and fibroblasts.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Houttuynia Cordata Powder, as an extract, is an essential botanical ingredient, offering comprehensive benefits for various skin concerns from acne and inflammation to anti-aging and brightening, making it highly valuable in precision skincare formulations.
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