How Do We Define "Non Toxic" in the Hair Industry?

What does “non toxic” actually mean? To answer that accurately we have to not only define toxic, nontoxic, and toxicity, but we need to understand these terms as well. Obviously there are loads of contexts that these words can be used in but the context here is hair care, hair services, hair products, and salon industry marketing. Definitions non·tox·ic/nänˈtäksik/1 adjective: non-toxic not poisonous or toxic “nontoxic waste” “a nontoxic varnish” synonyms: nonpoisonous, innocuous, harmless, benign, safe, nonirritating, hypoallergenic