Arm & Hammer Laundry Detergent

Arm & Hammer has built its brand identity around baking soda (sodium bicarbonate), implying a simple, natural product. The actual formula of the standard Arm & Hammer laundry detergent is more complex: it includes synthetic surfactants, synthetic fragrance, optical brighteners, and processing aids. The sodium bicarbonate content is present but serves primarily as a carrier and pH buffer, not as the primary cleaning agent.

The two main concerns in the standard formula are fragrance and optical brighteners. The fragrance component, listed simply as 'fragrance,' can represent a blend of dozens of undisclosed compounds. Arm & Hammer's standard formulas use a detectable fragrance load — not as intense as Tide or Downy, but present in amounts that deposit on fabric and remain through wearing. Optical brighteners are UV-reactive compounds engineered to remain on fabric and make whites appear brighter under fluorescent and UV light. They accumulate with repeated washing and represent a continuous skin contact exposure pathway.

The Free & Clear version of Arm & Hammer removes both fragrance and optical brighteners while keeping the surfactant and sodium carbonate cleaning system. For households choosing Arm & Hammer for budget or availability reasons, the Free & Clear version is a straightforward substitution that eliminates both of these concerns. It is widely available at major retailers and priced comparably to the standard formula.

From a cleaning performance standpoint, Arm & Hammer is effective for everyday cotton and synthetic laundry at a competitive price point. It is not an enzyme-heavy formula, so heavily soiled items with protein stains may benefit from pre-treatment. The baking soda does contribute to water softening and odor neutralization, which is a genuine functional benefit — just not the entire story the branding suggests.