DMDM hydantoin

SCA endorses products with the Allergy Certified logo, that restrict DMD to 0.074% or less. Scientific experts at the Cosmetics Directive of the European Union & an independent Cosmetic Review panel states that DMDM hydantoin is considered ‘safe’ as a cosmetic ingredient used at the current ‘normal levels’ of use in products. The trouble with FRP’s formladehyde releasing chemicals, is that there is a ‘safe level’ of use & that manufacturers are not required bylaw to adhere to a standard of manufacturing. They are also not required to test the product before selling to consumers. Safe Cosmetics Australia campaigns to raise awareness for DMDM hydanton & provide a set of standards that brands can formulate in accordance with the advise ‘safe level’ of use.


CAS No.6440-58-0


DMDM Hydantoin is a formaldehyde-donor preservative , that prevents or retards microbial growth, thereby protecting cosmetics and personal care products; body wash and sprays, moisturisers, creams, toners, lotions, cleansers, hair care, pet care.

“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



  • DMDM hydantoin is a formaldehyde donor: "DMDM is a preservative in cosmetics and personal care products. DMDM hydantoin is also an antimicrobial agent used in cosmetics and personal care products. As an antimicrobial, it can help prevent the growth of fungi, yeast and harmful bacteria that can make people sick or give them rashes, for example." - - continued:

  • "The Cosmetic Ingredient Review (CIR), an independent expert scientific panel established by the Personal Care Products Council, also has evaluated the scientific data and concluded that DMDM hydantoin is safe as a cosmetic ingredient at current levels of use – 0.074 percent, or less. In 2005, the CIR Expert Panel considered available new data on DMDM hydantoin and reaffirmed its safety conclusion. The Cosmetics Directive of the European Union also has approved DMDM hydantoin as a preservative in cosmetics and personal care products at a maximum concentration of 0.6 percent"


  • "The use of a cream containing 0.25% DMDM hydantoin in these 4 patients still caused dermatitis in 1 and provoked itching in another. An increase in the use of DMDM hydantoin in cosmetic products will also inevitable increase the risk of cosmetic dermatitis in consumers allergic to formaldehyde." - NCBI Patch test reactivity to DMDM hydanton.

Amina Kitching