Formulating Vitamin C 30% in Silicone: Preventing Settling and Stickiness
Asked by: batblast41
On: October 07, 2017
Product Type:
Cosmetics
Question
I am looking for guidance on formulating a product similar to "Ordinary Vitamin C 30% in Silicone". I plan to use the following ingredients:
- Dimethicone (Heavy, Low-Odor)
- Cyclomethicone / Cyclopentasiloxane (to replace PolySilicone-11 and help lighten texture)
- PEG-10 Dimethicone (Silisolve) 1% (to help emulsify various silicones)
- Vitamin C Ultra-Fine 30% (must be Ultra-Fine type for this formula)
I need to adjust the proportions of Dimethicone and Cyclomethicone / Cyclopentasiloxane to achieve the following:
A. Sufficient viscosity to prevent the Vitamin C Ultra-Fine from settling.
B. A non-sticky texture when applied to the skin.
Please advise on how to achieve these properties.
Answer
Based on the provided information, a formulation similar to "Ordinary Vitamin C 30% in Silicone" typically uses:
- Vitamin C Ultra-Fine: 30% (Only the Ultra-Fine type is recommended for this formula type).
- PEG-10 Dimethicone (Silisolve): 1% (Acts as a silicone emulsifier).
- Dimethicone (Heavy, Low-Odor) and Cyclomethicone / Cyclopentasiloxane: The proportions of these silicones are adjusted to achieve the desired consistency (sufficiently viscous to prevent Vitamin C settling) and texture (non-sticky). Cyclomethicone helps to lighten the texture.
Related Products Mentioned
Vitamin C (L-ascorbic acid) (Ultra-Fine)
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Dimethicone (Light/50, Low-Odor)
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