
THE STORY OF DMDM HYDANTOIN
DMDM Hydantoin: The Reliable Preservative for Microbial Protection
DMDM Hydantoin is a broad-spectrum antimicrobial preservative used in skincare, haircare, and personal-care formulations to prevent bacterial and fungal contamination. Known for its effectiveness even at low concentrations, it ensures long shelf life and product safety in shampoos, conditioners, lotions, and rinsable formulations.
Formaldehyde-Releasing Preservative Engineered for Long-Lasting ProtectionA
DMDM Hydantoin is a formaldehyde-releasing preservative, meaning it gradually releases very small amounts of formaldehyde to inhibit microbial growth.
It is stable, water-soluble, and highly compatible with surfactants and emulsion systems.
TRCkem supplies high-purity, cosmetic-grade DMDM Hydantoin, suitable for rinse-off and select leave-on products following regulatory guidelines.
Protect. Stabilize. Preserve.
Core benefits in personal-care formulations:
✅ Broad-spectrum protection against bacteria, yeast & mold
✅ Highly effective in surfactant-rich systems like shampoos
✅ Works well in low levels, reducing preservative load
✅ Maintains product color, texture & fragrance stability
Used in: shampoos, conditioners, liquid soaps, body lotions, gels, scrubs, and many rinse-off formulations.
Regulated, Effective & Best for Rinse-Off Systems
• Typical use level: 0.1–0.6% depending on formula
• Water-soluble; add to cool-down (below 50°C) to avoid degradation
• Highly compatible with surfactants, emulsifiers & glycols
• Approved in many regions for rinse-off products; restricted in certain leave-on types
• Follow global regulatory guidelines for formaldehyde releasers
• Store cool, sealed, and protected from contamination
• Stable across wide pH range: pH 3–9
Formulator’s Queries, We Answered
1. What is DMDM Hydantoin?
DMDM Hydantoin is a preservative commonly used in personal care and cosmetic formulations. It works by releasing a small, safe amount of formaldehyde to prevent the growth of bacteria, yeast, and mold, thereby extending product shelf life.
2. What is the CAS Number and INCI Name of DMDM Hydantoin?
CAS Number: 6440-58-0
INCI Name: DMDM Hydantoin
3. What are the benefits of using DMDM Hydantoin in personal care products?
Effective Preservation: Protects formulations against microbial contamination.
Longer Shelf Life: Extends the stability of personal care products.
Wide Compatibility: Works well in both rinse-off and leave-on products.
Cost-Effective: Requires only small amounts for preservation.
4. In which types of products is DMDM Hydantoin commonly used?
Shampoos & Conditioners
Hair Gels & Styling Products
Creams & Lotions
Liquid Soaps & Body Washes
Makeup & Sunscreens
5. Is DMDM Hydantoin safe for use in cosmetics and personal care?
Yes, DMDM Hydantoin is considered safe when used at regulated concentrations as per cosmetic safety guidelines. However, it should always be formulated within industry-recommended limits.
6. Can DMDM Hydantoin cause skin irritation?
In most people, DMDM Hydantoin is well tolerated. However, individuals with sensitive skin may experience mild irritation or allergic reactions due to its formaldehyde-releasing property. A patch test or dermatological testing is recommended.