Chester Labs

Chester Labs is a specialized manufacturer of infection control and skin care products primarily serving the healthcare and professional markets. Founded in 1988 and headquartered in Cincinnati, Ohio, the company produces a diverse portfolio of liquids, lotions, and gels, including hand sanitizers, antimicrobial soaps, and ultrasound transmission gels. In addition to its proprietary brands such as AprilGuard and Enviro-Sept, Chester Labs operates as a contract manufacturing organization (CMO) providing custom formulation and packaging services. The company was acquired by Kao Corporation in 2012, integrating into Kao's professional healthcare division to enhance its hygiene and sanitization offerings. Today, it continues to support hospitals and clinics with high-quality, regulatory-compliant topical products.