Ethylhexyl Methoxycinnamate: A Key Ingredient in Sunscreens and Cosmetics

Ethylhexyl Methoxycinnamate, also known as Octinoxate, is a prevalent organic compound in sunscreens and various cosmetic products. It is an ester formed from methoxycinnamic acid and 2-ethylhexanol, appearing as a clear, oil-soluble liquid that is insoluble in water.

Applications in Personal Care Products

Sunscreens

In sunscreens, Octinoxate serves as a UV filter, primarily absorbing UV-B rays responsible for sunburn and contributing to skin cancer. Its effectiveness in protecting the skin from harmful UV-B rays makes it a common ingredient in these products.

Cosmetics

Beyond sunscreens, Ethylhexyl Methoxycinnamate is incorporated into various cosmetic formulations, including face foundations and lip care products. Its emollient properties help stabilize other ingredients and improve the overall texture and feel of the product.

Benefits for Formulations

• Enhanced Stability: Octinoxate helps maintain the stability and effectiveness of other ingredients in formulations, extending the product's shelf life.

• Improved Sensory Experience: It imparts a smooth, non-greasy feel to formulations, enhancing the overall user experience.

• Versatility: Compatible with a wide range of formulations, including both aqueous and non-aqueous systems, due to its oil-soluble nature.

Safety and Regulatory Status

The U.S. Food and Drug Administration (FDA) has reviewed the safety of Octinoxate and approved its use as an active ingredient in over-the-counter (OTC) sunscreen products, with a maximum concentration of 7.5%. In the European Union, it is permitted up to a concentration of 10% in cosmetic products. Similarly, Octinoxate is approved as a safe and effective sunscreen ingredient in Canada, Australia, and Japan.

In recent years, concerns have been raised about the potential environmental impact of Octinoxate, particularly on coral reefs. Some studies suggest that it may contribute to coral bleaching, leading regions like Hawaii and Palau to legislate bans on sunscreens containing Octinoxate and similar compounds. These measures aim to protect marine ecosystems from potential harm associated with certain sunscreen ingredients.

In summary, Ethylhexyl Methoxycinnamate is a multifunctional ingredient that enhances the performance and sensory attributes of sunscreens and cosmetic products. Its unique properties make it a valuable addition to personal care formulations, contributing to improved texture, stability, and overall user satisfaction.