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DMDM Hydantoin in Hair Products: What It Is and Why We Leave It Out

By Devin Graciano

When it comes to hair care, we all want products that keep our hair looking its best. But it's also worth knowing what's in them, especially ingredients that can irritate your skin and scalp.

One of those is DMDM hydantoin, a preservative found in some hair care products that can trigger allergic reactions in some people.

In this article, we'll explain what DMDM hydantoin is, why some people choose to avoid it, and which Goldie Locks® products are made without it.


DMDM hydantoin free hair products

What Is DMDM Hydantoin?

DMDM hydantoin is a preservative used to extend the shelf life of some hair care and skincare products. It works by slowly releasing small amounts of formaldehyde, which keeps bacteria and mold from growing in the product.

That's why it's known as a "formaldehyde releaser," and it's the main reason some people prefer to avoid it.

Is DMDM Hydantoin Actually Bad For Hair?

woman worried about hair loss

DMDM hydantoin does its job as a preservative, but it isn't a good fit for everyone. Formaldehyde and formaldehyde-releasing preservatives are a well-known cause of allergic contact dermatitis, a skin reaction that can show up as redness, itching, and flaking.

On the scalp, that kind of irritation is uncomfortable, and if you're sensitive, it's a good reason to choose products without formaldehyde releasers.

Can DMDM Hydantoin Cause Hair Loss?

hair brush with fallen hairs

There's no solid scientific evidence that DMDM hydantoin causes hair loss. It can cause scalp irritation in people who are sensitive to it. If you're noticing hair loss or thinning, see a dermatologist to find the cause.

What Are The Symptoms Of DMDM Hydantoin?

The most common signs of an allergic reaction to DMDM hydantoin are skin irritation like rashes, itching, and swelling. With hair products, they usually show up on the scalp, hairline, face, and neck. If you think you're reacting to a product, stop using it and talk to a dermatologist, who can do patch testing to confirm the cause.

What Other Names Does DMDM Hydantoin Have?

On an ingredient list, DMDM hydantoin may also appear as:

  • 1,3-Bis(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione (its chemical name)
  • Glydant (a trade name)

If you react to formaldehyde, you may also want to check for other formaldehyde-releasing preservatives, such as:

  • Diazolidinyl urea (Germall II)
  • Imidazolidinyl urea
  • Quaternium-15
  • Sodium hydroxymethylglycinate

Checking the ingredient list of your hair care products is the easiest way to avoid ingredients you'd rather skip.

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Shampoo Without DMDM Hydantoin

shampoo without dmdm hydantoin

Goldie Locks® Signature Shampoo is made without DMDM hydantoin, and it's gentle on your hair and scalp:

  • Formulated to hydrate and leave hair feeling soft.
  • Made with ingredients like marula oil, ginseng, and biotin.
  • Suitable for all hair types, color-safe, and extension friendly.
  • Cleanses gently without stripping natural oils, so hair feels clean and refreshed.
  • Protein-free and made without sulfates, parabens, phthalates, or gluten.

Clarifying Shampoo Without DMDM Hydantoin

clarifying shampoo without dmdm hydantoin

If you want a deep-cleansing shampoo without DMDM hydantoin, Goldie Locks® Clarifying Shampoo is a great option:

  • Formulated to lift buildup from the scalp and hair.
  • Removes excess oil and residue so your scalp feels fresh.
  • Leaves hair feeling softer and looking shinier after just one wash.
  • Suitable for all hair types.
  • Made without parabens, phthalates, or DMDM hydantoin.

Goldie Locks® Clarifying Shampoo gives you a refreshing hair wash that leaves hair feeling clean and soft.

Conditioner Without DMDM Hydantoin

conditioner without dmdm hydantoin

Looking for a conditioner without DMDM hydantoin? Goldie Locks® Signature Conditioner is a great choice:

  • Formulated to hydrate without weighing hair down.
  • Helps detangle and reduce frizz, so hair is easier to manage.
  • Made with argan, avocado, marula, and jojoba oils.
  • Protein-free, color-safe, and extension friendly.
  • Leaves hair looking shiny and feeling silky-smooth.

Leave-in Conditioner Without DMDM Hydantoin

leave in conditioner without dmdm hydantoin

Goldie Locks® Signature Leave-In Conditioner is a great leave-in without DMDM hydantoin:

  • Adds long-lasting moisture, leaving hair soft and smooth.
  • Formulated to add slip, so detangling and styling feel easier.
  • Lightweight enough for daily use.
  • Leaves hair looking and feeling refreshed.

FAQs

Is DMDM hydantoin safe?

It's an approved cosmetic preservative, but it releases small amounts of formaldehyde, and formaldehyde releasers are a common cause of allergic contact dermatitis. If you have sensitive skin or a known formaldehyde allergy, it's worth avoiding.

Does DMDM hydantoin cause hair loss?

There's no solid scientific evidence that it does. It can irritate the scalp in people who are sensitive to it. If you're noticing hair loss, see a dermatologist.

How do I know if a product contains DMDM hydantoin?

Check the ingredient list for DMDM hydantoin or its trade name, Glydant. If you react to formaldehyde, also look for other releasers like diazolidinyl urea, imidazolidinyl urea, quaternium-15, and sodium hydroxymethylglycinate.

Final Thoughts

DMDM hydantoin is a preservative that works by releasing small amounts of formaldehyde. It's a known trigger for allergic skin reactions, so if you have a sensitive scalp, it's one ingredient worth checking for.

The simplest step is to read the ingredient list of your hair care products. Goldie Locks® hair care is made without DMDM hydantoin, sulfates, parabens, phthalates, or gluten.