Vitamin C Gel Formulation Issue: Thickening and Separation

Asked by: skeggiold.film On: August 06, 2016 Product Type: Cosmetics

Question

I am trying to create a Vitamin C gel formula using the following ingredients:

  • Isododecane
  • Vitamin C (L-ascorbic acid) (Ultra-Fine)
  • Hectorite Oil Gel (Mineral Oil Base)

However, my formula is not thickening as expected, it is separating into layers, and the Vitamin C (L-ascorbic acid) (Ultra-Fine) powder is settling at the bottom instead of staying suspended. What is causing this issue, and how can I adjust my formula to achieve the desired gel consistency and keep the Vitamin C powder evenly dispersed and suspended?

Answer

Explanation for Vitamin C Gel Formula Issue

The issue you experienced with your Vitamin C gel formula not thickening and separating is due to using the incorrect type of Hectorite Oil Gel for your formula's base.

Hectorite Oil Gel acts as a thickener for oil-based formulas, but it is specific to the type of oil base used. The Hectorite Oil Gel (Mineral Oil Base) you initially used is designed to thicken formulas primarily based on mineral oil. Your formula, however, uses Isododecane as the main base.

To properly thicken a formula with an Isododecane base, you need to use Hectorite Gel™ (Isododecane Base).

The staff in the forum thread correctly identified this issue and provided the adjusted formula using the appropriate thickener.

Corrected Formula

Here is the corrected formula that should achieve the desired gel consistency and keep the Vitamin C powder suspended:

  • Hectorite Gel™ (Isododecane Base): 20%
  • Isododecane: 65%
  • Vitamin C (L-ascorbic acid) (Ultra-Fine): 15%

Mixing Instructions

  1. Combine the Hectorite Gel™ (Isodododecane Base) and Isododecane.
  2. Blend the mixture thoroughly until a smooth oil gel forms and the Hectorite Gel is completely dissolved.
  3. Carefully add the Vitamin C (L-ascorbic acid) (Ultra-Fine) powder.
  4. Blend again until the Vitamin C powder is evenly dispersed throughout the gel, ensuring it remains suspended without settling.

The staff has also confirmed that a voucher has been issued to compensate for the ingredients used in the incorrect formulation attempt.