Curcuma Longa (Turmeric) Leaf Extract

Product Description

Green Stone Swiss supplies Curcuma Longa (Turmeric) Leaf Extract via direct factory channels, delivering standardized Curcuma longa leaf actives with batch COA traceability for cosmetic OEM and botanical skincare manufacturers.

Leaf-derived flavonoids and polyphenols—distinct from rhizome curcuminoid concentrates—scavenge ROS and modulate NF-κB-linked inflammatory signaling in aqueous topical matrices.

Unlike turmeric root powder positioned for curcuminoid brightening masks, this leaf extract suits calming toners, anti-pollution serums, and daily antioxidant essences in clean-label facial care lines.

Product Specification

• INCI Name: Curcuma Longa (Turmeric) Leaf Extract
• CAS No.: N/A
• Botanical Source: Curcuma longa L. (leaf)
• Extraction Solvent: Glycerin/water (Typical); ethanol/water 40–60% on request
• Active Marker: Total flavonoids ≥1.5% (Typical UV); Total polyphenols ≥2.0% (Typical)
• Extraction Ratio: 1:5 to 1:10 leaf-to-menstruum (Typical)
• Appearance: Light green to amber clear liquid
• Solubility: Water-soluble; dispersible in hydroalcoholic and glycerin systems
• Suggested pH: Stable pH 4.5–7.0 in finished formulas (Typical)
• Assay Method: UV for flavonoids/polyphenols; HPLC for marker profiling (Typical)
• Shelf Life: 24 months sealed, below 25°C (Typical)
• Standard Packaging: 5 kg / 25 kg food-grade HDPE drum
• Storage: Cool, shaded, sealed; protect from heat and direct light
• Regulatory Status: Listed in INCI; indexed in CosIng as skin-conditioning agent
• Quality & Testing: Typical COA: polyphenols, moisture, pH, heavy metals, microbiology
• Compliance Note: For cosmetic use only; confirm botanical ingredient status per target market

Key Benefits & Applications

Turmeric leaf flavonoids deliver facial-focused antioxidant, anti-pollution, and calming support in leave-on skincare.

• Environmental Stress Shield: Helps defend skin appearance against urban particulate and oxidative environmental exposure.
• Flavonoid Antioxidant Defense: Leaf polyphenols neutralize daily oxidative stress in morning antioxidant essences.
• Free Radical Neutralization: Scavenges ROS linked to photo-stress and visible skin fatigue appearance.
• Anti-Inflammatory Signaling: Modulates cytokine-linked redness appearance in sensitive-skin treatment lines.
• Dermal Comfort Support: Soothes reactive skin appearance in alcohol-free toners and post-exposure mists.

Formulation Guidelines

Standardize polyphenol input by assay; add during cool-down to protect leaf markers.

• Recommended use level: 1.0–5.0% in leave-on products; 3.0–8.0% in rinse-off cleansers
• Optimal formula pH: pH 5.0–6.5 for flavonoid stability in aqueous bases
• Processing: Incorporate below 40°C in water phase; pre-dilute before addition
• Compatibility: Compatible with glycols, HA, and mild preservatives; avoid strong oxidizers
• Caution: May impart light green-to-amber hue; evaluate color in clear packaging
• Synergy: Panthenol at 1–2% improves tolerance when co-formulated with turmeric leaf polyphenols in calming mists.