DMDM Hydantoin, are you concerned?
More and more people are paying attention to the ingredients in their skin and hair care products.
Cosmetic ingredients that are said to pose a high risk of allergies and skin irritation include preservatives , fragrances , and colorings. Many people may be particularly concerned about what kind of preservatives are used.
But how many people are concerned about the preservative known as DMDM hydantoin?
Many people may not be familiar with the name, but it is a preservative that is sometimes included in shampoos, conditioners, and body soaps.
What is DMDM hydantoin?
DMDM hydantoin has strong antibacterial properties. It prevents the growth of mold, fungi, and bacteria for a long period of time. It is an ideal preservative to extend the shelf life of cosmetics.
However, it is known to be an allergen for humans, and so there is already growing concern in Europe and the United States about it, just like parabens and phenoxyethanol.
Why are there growing concerns?
DMDM hydantoin slowly releases small amounts of formaldehyde after mixing, which prevents cosmetics from spoiling.
However, this brings with it a number of risks, including:
Skin allergies
DMDM hydantoin is known to be a skin allergen, and is said to cause allergic reactions quite frequently.
Women with chronic skin conditions are most susceptible to allergies , and people who have previously had an allergic reaction to formaldehyde are more likely to develop skin irritation.
If you have an allergic reaction to DMDM hydantoin, you may experience the following symptoms:
- Skin irritation
- Skin discoloration
- Itchy rash
- swelling
- Hives
- Peeling skin
If you experience these symptoms, discontinue use immediately.
Carcinogenicity
The U.S. National Toxicology Program classifies formaldehyde as a probable carcinogen.
However, your exposure to formaldehyde from DMDM hydantoin is very small, and not much is known about the cancer-causing potential of small amounts of formaldehyde because very few studies have been done on humans.
Hair loss
In 2022, a class action lawsuit was filed in the United States alleging that DMDM hydantoin causes hair loss. The lawsuit covers more than 25 products.
However, there is no proof that DMDM hydantoin was actually the cause.
However, it is possible that inflammation and damage to the scalp caused by an allergic reaction is related to hair loss.
- When I started using the shampoo in question, my scalp started to itch.
- Hands full of hair falling out.
It is true that there are painful consumer complaints such as these.
Safety of DMDM hydantoin
In Japan, it is permitted to be used in cosmetics that are rinsed off, such as shampoos, at a concentration of up to 0.3%, while the US Cosmetic Ingredient Review considers it safe at a concentration of 0.074% or less.
Even low concentrations can cause skin reactions in people who are allergic to formaldehyde.
If you experience itchy scalp after using shampoo or your skin feels uncomfortable after using body soap, check the list of ingredients.
Also, people with chronic dermatitis or sensitive skin may want to avoid cosmetics containing DMDM hydantoin if possible.
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"CONCIO" - A company that thoroughly researches the risks of cosmetic ingredients
CONCIO is the first additive-free skin care product in Japan to receive EWG certification, meeting new standards.
Focusing on the risk of skin irritation and allergies caused by cosmetic ingredients, we strictly adhere to our own safety standards and do not use 2,500 ingredients.
We deliver world-class peace of mind to sensitive skin in Japan.
*This does not guarantee that skin irritation or allergies will not occur in all people.
