The Six Classes Approach to Reducing Chemical Harm: Healthier Products, Healthier People

Many of the products we use every day contain chemicals of concern that may be harming our health. Many of these substances can be grouped into “Six Classes”, each containing similar chemicals. The Six Classes approach allows us to better understand these chemicals, their functions, where they are used, and how they can be avoided. It can prevent a cycle of “regrettable substitution,” whereby a phased out harmful chemical is replaced with a closely related chemical which may cause similar harm. is a project of the Green Science Policy Institute.


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