Broad-Spectrum Preservative Compatible with Anionic Ingredients for Eye/Nasal Wash

Based on your requirement for a broad-spectrum preservative compatible with anionic ingredients for use in eye or nasal wash solutions, I have reviewed the available options.

One product, Eye Preserved™, is specifically developed for use in contact lens cleaners and suitable for use around the eyes or for sensitive skin. However, its description explicitly states that it is cationic and therefore incompatible with all anionic mixtures. This means it would not be suitable for a formula containing anionic ingredients.

Other broad-spectrum preservatives found, such as Mild Preserved™ COS, NaturePreserve™ LB2, Global Guard™ 221, Preserve-BSB™, and NaturePreserve™ Ultra, are general cosmetic preservatives. While they offer broad-spectrum protection, their descriptions do not specifically confirm compatibility with anionic ingredients in all types of formulations or their suitability for the highly sensitive application of eye or nasal wash.

For products intended for use in the eyes or nose, it is crucial to use ingredients that are specifically approved and tested for ophthalmic or nasal applications due to the sensitivity of these areas. Standard cosmetic-grade preservatives may cause irritation or may not meet the stringent safety requirements for such uses.

Therefore, based on the information available, I cannot confidently recommend a specific broad-spectrum preservative that is both compatible with anionic ingredients and explicitly suitable for eye or nasal wash solutions. It is highly recommended to consult with a specialist in ophthalmic or nasal formulations to ensure the safety and efficacy of the preservative system for your specific product.