Adding glycerin is one method to thicken a thin vitamin C serum.
While a specific process isn't detailed within the provided context beyond the mention of using a funnel to add glycerin, we can infer some general approaches based on that information and common cosmetic formulation practices:
- Glycerin: The linked video suggests using glycerin to thicken the serum. Glycerin is a humectant, meaning it attracts moisture. It also adds viscosity.
- Gradual Addition: The video mentions using a funnel to add the glycerin because it's thick and sticky. This suggests adding it slowly and mixing well to avoid clumps or uneven consistency.
Important Considerations:
- Percentage: The video does not specify the percentage of glycerin to use. Start with a small amount (e.g., 1-5%) and increase gradually until the desired consistency is reached. Adding too much can make the serum sticky or tacky.
- Compatibility: Ensure that glycerin is compatible with the other ingredients in your vitamin C serum.
- Mixing: Thorough mixing is crucial to ensure the glycerin is evenly distributed throughout the serum.
- Preservation: If you're altering a commercial formula, be mindful of preservation. Adding ingredients can change the overall formula and potentially affect its shelf life and susceptibility to microbial growth. If you are making your own vitamin C serum, you should consider a preservative.
It is always recommended to proceed with caution and do a patch test before applying any altered serum to your entire face.
