Who Owns Arm & Hammer?

The commercial history of Arm & Hammer begins with John Dwight and Austin Church, who were brothers-in-law. Dwight began selling packaged sodium bicarbonate (baking soda) from his home in New York City in 1846 under the Dwight & Church partnership. Church later founded his own baking soda company, Vulcan Spice Mills, which adopted the Arm & Hammer logo and the muscular arm-and-hammer imagery by 1867. The two companies competed for decades before formally merging under the Church & Dwight name.

Sodium bicarbonate had widespread Victorian-era uses: baking, cleaning teeth, deodorizing, and treating digestive discomfort. Church & Dwight's early marketing promoted all of these applications, establishing the brand as a household multi-purpose ingredient.

The Arm & Hammer lion-and-shield trademark was formalized in the 1880s. The arm-and-hammer icon itself, depicting a muscular forearm holding a hammer, is believed to have been adapted from the Vulcan Spice Mills logo. The imagery was associated with the labor movement in the late nineteenth century, lending the brand a working-class credibility that supported its value-market positioning.

Through the first half of the twentieth century, Arm & Hammer's core product remained baking soda. Church & Dwight's business model during this period was relatively narrow. The company sustained itself on baking soda's multiple household uses and its use in food manufacturing.

The brand's modern diversification began in 1970, when Church & Dwight introduced Arm & Hammer laundry detergent, applying baking soda's odor-neutralizing and cleaning properties to the laundry category. Cat litter deodorizer followed in 1972. These extensions brought Arm & Hammer into direct competition with Procter & Gamble and Colgate-Palmolive for the first time.

Arm & Hammer toothpaste launched in 1988. The baking soda whitening and cleaning positioning differentiated it from fluoride-focused competitors. By the mid-1990s, Arm & Hammer Dental Care was one of the top-ten best-selling toothpaste brands in the United States. Church & Dwight has since built the Arm & Hammer oral care line into multiple sub-brands covering whitening, sensitivity, and enamel protection.

Deodorant and antiperspirant products launched in the 2000s, again leveraging baking soda's odor-neutralizing properties. The Arm & Hammer Essentials line uses baking soda as its primary odor-fighting ingredient without aluminum compounds, appealing to consumers seeking aluminum-free deodorant alternatives.

Church & Dwight completed a significant acquisition in 2006, purchasing Playtex Products for $1.9 billion. While Playtex itself is separate from Arm & Hammer, the acquisition demonstrated CHD's strategy of building a portfolio around the Arm & Hammer core while adding complementary consumer brands. Subsequent acquisitions brought SpinBrush, Oxi Clean (consumer rights), and Vitafusion gummy vitamins into the portfolio.

As of June 2026, Arm & Hammer products span six major U.S. consumer categories: oral care, laundry, cat litter, baking soda (consumer and industrial), deodorant, and household cleaning.