Internal FDA emails obtained by the Environmental Working Group through a FOIA request indicate that the agency was moving toward rulemaking in 2016 to restrict or prohibit use of formaldehyde in heated hair-straightening cosmetics, but seemingly abandoned the initiative. That has Congress, NGOs and other stakeholders asking questions and renewing calls for cosmetics regulatory reform.
For a decade now, heated hair-straightening products that expose users to formaldehyde gas have been a concern shared by NGOs, US lawmakers and other public health advocates, and even the industry-funded Cosmetic Ingredient Review determined such products unsafe in 2011.
Still, they remain on the US market.