Modifying Vitamin C E Ferulic Kit for Dry-Feel Cream-Serum Texture

Question

How can I modify the texture of the Vitamin C E Ferulic Kit (Product ID 70) to achieve a dry-feel cream-serum? Specifically: What adjustments should be made to the percentages of Ethoxydiglycol (Product ID 137) and Propylene Glycol (Product ID 138)? Should Glycerin (Product ID 143) be removed? What can replace Laureth-23 (Product ID 140)? Would a cream maker or Pro Polymer (Product ID 234) work? Can Pentylene Glycol (Product ID 886) be used instead of or with Propylene Glycol? Does the modified formula still need to be refrigerated?

MySkinRecipes Expert · Accepted Answer

Modifying Vitamin C E Ferulic Kit to a Dry-Feel Cream-Serum

To adjust the texture of the Vitamin C E Ferulic kit to a cream-serum that feels dry on the skin, the team suggested the following modifications:

Reduce the percentage of Ethoxydiglycol (Product ID 137) and Propylene Glycol (Product ID 138). For example, reduce Ethoxydiglycol to around 10% and Propylene Glycol to around 5%.
Remove Glycerin (Product ID 143) from the formula.
Replace Laureth-23 (Product ID 140) with a cream maker or Pro Polymer (Product ID 234).

Regarding the use of Pentylene Glycol (Product ID 886), it can be used to replace or be combined with Propylene Glycol. Pentylene Glycol also acts as a penetration enhancer and has antimicrobial properties, which can help reduce the amount of preservatives needed in the formula.

Concerning refrigeration, formulas containing L-Ascorbic Acid (like the Vitamin C E Ferulic kit, Product ID 70, which uses Vitamin C L-Ascorbic Acid powder, Product ID 134) are generally more stable when stored in the refrigerator, even after these texture modifications.