DropBrigt® VCI | Ascorbyl Stearate, Isostearic Acid, Ascorbic Acid

DropBright® VCI is a stable, oil-soluble derivative of Vitamin C (Ascorbyl Stearate). It combines the benefits of Vitamin C's whitening and antioxidant properties with enhanced stability and solubility in oil-based formulations. This makes it ideal for various cosmetic applications requiring antioxidant protection and skin brightening. DropBright® VCI is converted into active Vitamin C in the skin through enzymatic reactions, ensuring effective results without oxidation concerns.

INCI Name: Ascorbyl Stearate, Ascorbyl Isostearate, Ascorbic Acid
CAS Numbers: 25395-66-8, 25395-66-8, 50-81-7
Molecular Formula: C24H42O7, C18H36O2, C6H8O6
Function: Whitening, Antioxidant
EWG Score: 1 (Low Hazard)

Benefits

1. Whitening Effect:

   • Inhibits tyrosinase activity, reducing melanin synthesis for brighter skin.
   • Achieves a 96.3% inhibition rate of tyrosinase activity at 1.8% concentration.

2. Antioxidant Protection:

   • Prevents oxidative damage by neutralizing free radicals.
   • Protects formulations and skin from oxidative stress.

3. Improved Stability:

   • Superior resistance to air and light degradation compared to pure Vitamin C.
   • Long-lasting activity in formulations without rapid oxidation.

4. Oil-Soluble Versatility:

   • Fully dissolves in various oils, enhancing compatibility with oil-based products.
   • Promotes efficient delivery of active Vitamin C into the skin.

Suggested Usage

• Concentration: 1%–10%
• Applications:
  • Whitening creams and serums.
  • Anti-aging products.
  • Oil-based formulations requiring antioxidant properties.
• Method of Incorporation:
  • Add during the oil phase of formulations.
  • Compatible with a variety of formulation techniques.

Features

• Enhances skin brightness and protects against photoaging.
• Works effectively in oil-based cosmetic systems.
• Converts to active Vitamin C enzymatically upon skin absorption.

Physicochemical Properties

• Appearance: Pale yellow oily liquid
• Relative Density (20°C): 0.850–0.950
• Refractive Index (25°C): 1.450–1.460
• Heavy Metals (Pb): ≤20 ppm

Cautions

• Storage:

  • Store at room temperature in a sealed, light-proof container.
  • Avoid exposure to air and moisture to preserve stability.

• Compatibility:

  • Avoid combining with highly acidic or alkaline ingredients to ensure stability.

Packaging and Shelf Life

• Packaging: 10 kg barrels or customized options.
• Shelf Life: 2 years under recommended storage conditions.