Ergosterol

Product Description

Ergosterol is a high-purity sterol derived from yeast, recognized primarily as the biological precursor to Vitamin D2 (Provitamin D2). This unique molecule offers a sophisticated approach to promoting skin health. Its key advantage lies in its ability to be converted into Vitamin D2 on the skin surface through exposure to UV light, supporting crucial cellular functions like differentiation and proliferation. Additionally, Ergosterol itself acts as a skin conditioning agent and provides antioxidant benefits. For formulators seeking innovative, science-backed ingredients for wellness-focused and pro-aging skincare lines, Ergosterol is a distinctive choice.

Product Uses

This specialty active is ideal for advanced and health-focused skincare formulations:

• Day Creams & Protective Skincare: Leverages potential conversion to Vitamin D2 with ambient UV exposure, supporting skin's natural defenses.
• Mature Skin Products: Addresses the potential decline in Vitamin D synthesis in aging skin, supporting cell renewal and barrier function.
• Wellness & Health-Focused Lines: Aligns with concepts of overall skin health, vitamin supplementation, and bio-fermentation technology.

Formulation Suggestions

The recommended dosage is between 0.1-1.0%. Ergosterol is a high-melting-point (approx. 160-180°C) crystalline powder. It must be added to the oil phase and heated significantly until fully dissolved. Ensure complete dissolution before emulsification to avoid grittiness. Due to its sensitivity to light and oxidation, it should be formulated with antioxidants and packaged in opaque, air-tight containers. Avoid prolonged exposure to high heat during processing.

Our advice is for reference only. Please follow the recommendations of your formulator for actual production.

Product Specification

• INCI Name: Ergosterol
• Synonyms: Provitamin D2, Ergosta-5,7,22-trien-3β-ol
• CAS No.: 57-87-4
• Molecular Formula: C₂₈H₄₄O
• Appearance: White to off-white crystalline powder
• Purity: ≥98%
• Solubility: Soluble in ethanol, ether, chloroform, and hot oils. Insoluble in water.
• Stability: Stable in solid form. Sensitive to light (UV converts it to Vitamin D2) and oxidation. Requires protection in formulations.
• Properties: A fungal sterol (lipid) known as Provitamin D2. Acts as a precursor to Vitamin D2 upon UV exposure. Provides skin conditioning and antioxidant benefits, supporting overall skin health.
• Origin: China