Antioxidants for Lipstick Formulations

Regarding the use of Pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate (often found in products like Protec™ OX) in lipstick, this ingredient is a synthetic antioxidant that is oil-soluble. It is commonly used in cosmetic formulations to prevent the oxidation of oils and fats, which helps extend the shelf life and maintain the quality of the product. Therefore, it can technically be used in lipstick formulations for its antioxidant properties.

If you are looking for natural, oil-soluble antioxidants as alternatives to BHT for a natural lipstick formulation, here are a few options:

• Astaxanthin (10% Algae Extract, Oil): This is a powerful natural antioxidant derived from algae. It is oil-soluble and suitable for oil-based formulas like lipstick. It helps protect the oils in your formulation from oxidation and also offers skin benefits.
• Sea Buckthorn (Fruit) Oil (Virgin, CO2 Extraction): This natural oil contains beneficial antioxidants like Vitamin E and Beta-Carotene. Incorporating this oil into your lipstick formula provides natural antioxidant protection to the oil phase while also offering nourishing properties.

Another effective oil-based antioxidant, although not strictly natural, is Dimethylmethoxy Chromanol (1%, Oil Based). It has shown superior ability in preventing the oxidation of natural oils and sensitive ingredients compared to Vitamin E, making it a strong option for protecting your formulation.