FDA Proposes Total Ban on Formaldehyde in Hair Straightening Products

After years of bureaucratic delays and mounting pressure from public health advocates, the U.S. Food and Drug Administration (FDA) has officially proposed a nationwide ban on formaldehyde in hair straightening products.

The regulatory action targets a class of highly popular cosmetic treatments—often marketed as "Brazilian blowouts" or chemical relaxers—that have long been a staple in salons across the country.

Under the proposed rule, manufacturers would be prohibited from using formaldehyde, as well as formaldehyde-releasing chemicals like methylene glycol, as active ingredients in any hair smoothing products marketed in the United States.

The mechanism of exposure is inherently tied to the salon process. These products are typically applied to the hair in a liquid form. When a stylist subsequently applies high heat using a blow dryer or flat iron to lock in the straight texture, the chemicals break down and release toxic formaldehyde gas directly into the surrounding air.

This aerosolization creates an immediate hazard for both the client in the chair and the salon professionals who handle the treatments daily. Short-term exposure to the fumes is known to cause severe respiratory distress, skin sensitization, eye irritation, and asthma attacks.[2]

However, it is the long-term epidemiological evidence that ultimately forced the agency's hand. The turning point for regulatory action was a growing body of research linking the chemicals to severe, life-threatening health outcomes.[1]

A landmark 2022 study conducted by the National Institutes of Health (NIH) found that frequent users of chemical hair straighteners—defined as those using the products more than four times a year—had a significantly higher risk of developing uterine cancer compared to non-users.[1]

Subsequent research reinforced these alarming findings. Studies published by Boston University researchers in 2023 and 2025 linked the prolonged use of these specific hair relaxers to an increased risk of ovarian cancer, uterine fibroids, and reduced fertility, particularly among postmenopausal women.

Beyond consumer safety, the ban addresses a profound issue of health equity. Driven by decades of societal pressure and Eurocentric beauty standards, Black women have historically been the primary consumers of chemical hair relaxers.

Consequently, Black women have borne the brunt of the toxic exposure, suffering disproportionately from the associated hormone-related cancers and reproductive health challenges documented in the clinical studies.[1]

The FDA's action arrives after immense public pressure. While the agency first labeled formaldehyde a human carcinogen in 2016, the rulemaking process stalled repeatedly, missing multiple self-imposed target dates throughout 2024 and 2025.[2]

Salon workers, injury attorneys, and environmental advocacy groups lobbied aggressively for the ban, arguing that every month of delay prioritized industry logistics over human lives.[2]

The beauty industry is already bracing for the transition. Many forward-thinking salons have begun swapping out traditional formulas for formaldehyde-free alternatives, such as glyoxylic acid-based treatments, which alter the hair's structural bonds without releasing carcinogenic gas.

The regulatory move also coincides with thousands of pending lawsuits against major cosmetic manufacturers, with plaintiffs alleging that the companies deliberately failed to warn consumers about the severe cancer risks associated with their chemical relaxers.

The proposed rule now enters a mandatory public comment period. While the scientific consensus on the danger is clear, it remains uncertain how aggressively the cosmetic industry will push back on the timeline, or exactly when the FDA will mandate the final, physical removal of these products from salon shelves.