Addressing Rancidity in Your Facial Moisturizing Cream

It's common for creams, especially those containing oils, to develop a rancid smell due to oxidation, even with Vitamin E (Tocopheryl Acetate) included. While Vitamin E is a good antioxidant, its effectiveness can vary depending on the specific formula and the types of oils used. Tocopheryl Acetate is a stable form but has lower efficiency compared to other types.

Here are some other antioxidants you can consider adding to your formula to help prevent rancidity:

• Vitamin E (dl-alpha tocopherol): This form of Vitamin E is more active and has higher efficiency in protecting against oxidation compared to Tocopheryl Acetate.
• Rosemary Oleoresin Extract (ROE): A natural extract known for its strong antioxidant properties. It is particularly effective when used in conjunction with Vitamin E.
• Protec™ OX / ActiveProtec™ OX: These are highly efficient synthetic antioxidants designed specifically to protect formulas from oxidation. Protec™ OX is oil-soluble, while ActiveProtec™ OX is water-soluble, allowing you to choose based on your formula's phase.
• Protec™ SQ: This ingredient acts as a singlet state quencher, which helps reduce oxidation in a different way.
• Vitamin C Ester (Ascorbyl Palmitate): An oil-soluble form of Vitamin C that works well as an antioxidant in the oil phase of a formulation.

Consider the type of oils in your cream and whether you need an oil-soluble or water-soluble antioxidant when selecting the best option. Using a combination of antioxidants can sometimes provide broader protection against different types of oxidation.