This student developed a novel antiseptic combination called C30/P5/E5000 that is more effective at killing multidrug-resistant bacteria like MRSA and Pseudomonas aeruginosa than current solutions. Through a series of tests, the student found that chlorhexidine gluconate, polyaminopropyl biguanide, and EDTA work synergistically against these pathogens at low concentrations. Additionally, C30/P5/E5000 was shown to reduce bacterial levels much faster than existing solutions. This novel combination has potential for use in contact lens solutions and other disinfecting products due to its effectiveness, low cost, and ability to limit bacterial resistance.