NPE-free refers to products that do not contain nonylphenol ethoxylates (NPEs), which are surfactants commonly used in cleaning products and personal care items. NPEs can break down into nonylphenol, a substance that is considered harmful to aquatic life and has been linked to endocrine disruption in humans. The shift toward NPE-free products reflects growing environmental awareness and regulatory changes aimed at reducing chemical hazards. Many consumers and manufacturers are now opting for NPE-free alternatives to promote sustainability and safety.