Hair Styling + Treatment

577 products found

Style your hair your way without the extra toxics tagging along. Hair sprays, gels, mousses, serums, relaxers, and other treatments often rely on synthetic fragrances, plasticizers, solvents, and preservatives that sit on your scalp and hair all day. They can also be inhaled as mist or vapor while you style. These ingredients can be absorbed through the scalp, transfer to pillowcases, hats, and hands, and build up over time, especially if you heat-style, visit salons or barbers regularly, or layer multiple products. People using strong treatments like relaxers or straightening systems, or styling daily in small, less-ventilated spaces, can be especially vulnerable to endocrine disruptors and irritants in these formulas. Find safer alternatives for hair styling and treatment products in the Million Marker Product Guide.

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Last updated: June 9, 2026