DM Hydantoin
molecular structure · PubChem
AKA: 5, 5-DIMETHYLHYDANTOIN, 77-71-4, Dimethylhydantoin, 2, 4-Imidazolidinedione, Dantoin DMH, 5-Dimethyl-2, 4-imidazolidinedione, Dantoin 736, 5-Dimethyl hydantoin
Synthetic
Skin Conditioner
Hair Care
Not Clean
5,5-Dimethylhydantoin is an imidazolidine-2,4-dione.
Solubility Very soluble in ethanol, ether, acetone, benzene, chloroform; soluble in DMSO
Formula
C5H8N2O2
Mol. Weight
128.13
CAS #
77-71-4
Form
Liquid
State
Liquid
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Viscosity Controlling
Conditions Hair
Controls Viscosity
Softens and detangles hair
Controls product thickness
Traditional Use
A synthetic preservative compound developed in the 20th century for cosmetic antimicrobial purposes. Formulated to prevent microbial growth in cosmetic products as an alternative to traditional preservation methods.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR