Nontoxic

Nontoxic is a non-technical label used in everyday language and product marketing to indicate that a substance is not considered poisonous under typical conditions. It is not a formal scientific category in many regulatory systems; toxicity depends on dose, exposure route, duration, and individual susceptibility. Because of this, "nontoxic" does not guarantee safety in all contexts.

In toxicology, substances are evaluated for acute toxicity, chronic toxicity, irritancy, sensitization, mutagenicity, and other hazards. A chemical might be described as nontoxic for a specific route of exposure or dose, while still posing hazards at higher doses or through different exposure paths. The term is often used when a product has a low risk profile for typical uses, but not as a statement of universal safety.

Applications include household cleaners, cosmetics, paints, and toys. Some products advertise "nontoxic" to appeal to parents and consumers; however, labeling rules vary by jurisdiction. Regulatory frameworks may require substantiation for health claims; "nontoxic" claims may be limited or prohibited if they could mislead consumers.

Users should rely on complete safety information such as product labels, ingredient lists, and safety data sheets. Even substances described as nontoxic can cause harm in certain circumstances—pet exposures, ingestion by children, allergy or chemical sensitivity, or chronic exposure. When in doubt, seek alternative products and follow disposal guidelines.