4-Hydroxycinnamic Acid: Plant-Derived Compound for Antioxidant Defense and Skin Tone Balancing

Molecular Identity

• INCI Name: 4-Hydroxycinnamic Acid
• Molecular Formula: C₉H₈O₃
• Source: Found naturally in coffee, cinnamon, and many fruits as part of the phenolic acid group

Function and Formulation Use

4-Hydroxycinnamic acid is a phenolic compound valued in cosmetic formulation for its stabilizing role in antioxidant systems and its visible effects on tone balancing and skin resilience. It is often used in modern formulas aiming to improve appearance uniformity and defend against environmental factors.

• Antioxidant Action: Helps prevent oxidative degradation of sensitive actives
• Tone and Clarity: Supports brightness and a more uniform skin appearance
• Plant-Based Profile: Suited for natural, vegan, or clean-label product lines
• Formulation Support: Can act as a pH adjuster and co-functional stabilizer

Commonly used in emulsions, serums, brightening systems, protective day creams, and multifunctional antioxidant blends. Available in bulk for industrial formulation and private label manufacturing.

Recommended Usage and Processing

• Skincare emulsions: 0.05–0.3%
• Antioxidant-rich serums: 0.1–0.4%
• Rinse-off or scalp care: up to 0.5%

Soluble in alcohols and glycol systems; limited water solubility. Incorporate during pre-emulsion or cool-down phase. Best stability in pH range 4.0–6.5.

Material Specifications

• Purity: ≥ 99% (HPLC)
• Physical form: White to pale yellow crystalline powder
• Odor: Mild, neutral
• Origin: Natural or nature-identical production

Each batch is provided with COA, HPLC trace, MSDS, microbial testing, heavy metals report, and residual solvent analysis.

Regulatory and Quality Information

• INCI: 4-Hydroxycinnamic Acid
• CAS Number: 501-98-4
• Cosmetic-grade material only, non-ingestible
• REACH status: Available on request
• Complies with EU Cosmetic Regulation

Bulk Supply and B2B Advantages

• Available in stock from EU warehouse
• Flexible volumes for lab testing or full-scale production
• Technical support for solubility and pH optimization
• Batch traceability and consistent supply
• Documentation ready for QA and regulatory teams
• Competitive B2B pricing based on order volume

Contact us for a quotation, technical data sheet, or formulation support for 4-Hydroxycinnamic Acid.