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DIMETHYLIMIDAZOLIDINONE RICE STARCH
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Rice starch modified with imidazolidinone, used as a texture-enhancing and oil-absorbing agent.
Dimethylimidazolidinone Rice Starch (CAS 223239-90-5) is a modified polysaccharide produced by reacting 1,3-dimethyl-4,5-dihydroxy-2-imidazolidinone (DMDHEU) with rice (Oryza sativa) starch. This modification enhances the starch's oil-absorbing capacity, water resistance, and spreadability compared to native rice starch. It functions as an absorbent, viscosity controller, and skin-conditioning agent, providing a silky, matte finish. The dimethylimidazolidinone moiety raises questions about formaldehyde release potential (DMDHEU is a formaldehyde donor in textile finishing), though at cosmetic use levels and in its reacted form, free formaldehyde release is expected to be negligible.
Skin benefits
- Oil absorption and shine control
- Silky, powdery texture
- Talc alternative
- Smooth application feel
- Moisture-resistant finish
Known concerns
- DMDHEU is a known formaldehyde donor in industrial settings — cosmetic implications unclear
- Potential for trace formaldehyde release
- Limited independent safety data for this specific modified starch
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related others
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.