California’s Department of Toxic Substances Control plans to kick off its Priority Product review of contaminant 1,4-dioxane by focusing on the substance’s presence specifically in shampoo, instead of the overarching category of personal care products, and may potentially limit the scope even further to home in on shampoos with highest concentrations of the substance.
California DTSC Proposes Narrow Focus For 1,4-Dioxane Listing, Alignment With NY Threshold
Present as a contaminant in some personal care and cleaning products, 1,4-dioxane continues to be a concern for California’s Department of Toxic Substances Control under the state’s Safer Consumer Products regulation despite limits already imposed on 1,4-dioxane content in those product categories by New York.

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