Toluenesulfonamide

SCA endorses products with the Allergy Certified logo, that do not contain Toluenesulfonamide, formaldehyde resin. “HUMAN EXPOSURE STUDIES/ 8 cases of contact dermatitis from toluenesulfonamide formaldehyde resin in a nail hardener are presented. Most patients had used nail lacquers containing this resin for many years without trouble, but became sensitized to the resin shortly after the introduction of this particular nail hardener.” - Toxicology Data Network.

CLASSIFICATION

CAS No: 25035-71-6

HOW IS IT USED?

  • Toluenesulfonamide formaldehyde resin: is a nail hardener or lacquer, found in enamel products. "A synthetic resin" - Cosmetic.info

  • "Function(s): Film Former; Plasticizer; Suspending Agent - Nonsurfactant; FILM FORMING; PLASTICISER" - EWG "Strong evidence human toxicant or allergen"

  • “Formaldehyde is a naturally occurring substance made of carbon, hydrogen and oxygen. Humans produce about 1.5 ounces of formaldehyde a day as a normal part of our metabolism. Inhaled formaldehyde is rapidly metabolized and ultimately converted to carbon dioxide and exhaled. Formaldehyde does not accumulate in the body.” - download the fact sheet by AmericanChemistry.com

RESEARCH - WHAT DO EXPERTS SAY?

  • International restrictions apply 0.1% to 5%

  • "Other frequent causes of cosmetic-related contact allergic reactions were toluenesulfonamide formaldehyde resin in nail hardener and/or nail lacquer (15 patients [12.6%])." - Scinapse.io/papers

  • TGA Poisons Standard Schedule 6 -
    "human therapeutic use, oral hygiene preparations, nail hardener cosmetic preparations containing 5 per cent or more of free formaldehyde; in nail hardener cosmetic preparations containing 0.2 per cent or less of free formaldehyde when labelled with the statement: PROTECT CUTICLES WITH GREASE OR OIL. in aerosol sprays for cosmetic use containing 0.005 per cent or more of free formaldehyde; nail hardening products at a maximum concentration of 5 % in ready for use preparation; if the concentration exceeds 0.05 %, the label must indicate 'Contains formaldehyde';"

RESOURCES & RECOMMENDED ARTICLES:

Amina Kitching