Dimethylimidazolidinone Rice Starch

What is Dimethylimidazolidinone Rice Starch?

Dimethylimidazolidinone rice starch is a chemically modified form of rice-derived starch, created by cross-linking rice starch molecules with dimethylimidazolidinone to enhance its performance properties. This modification improves water and oil absorption while boosting stability in formulations. Commonly found in powders, creams, lotions, and makeup products, it works by drawing in excess sebum and moisture on the skin's surface, promoting a drier, less shiny appearance. As a viscosity controller, it helps thicken products without heaviness, ensuring smooth application and even distribution. Its structure allows it to suspend particles and maintain emulsion integrity, making it ideal for lightweight, non-greasy textures in oil-absorbing or mattifying cosmetics.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Absorbent

Absorbs water and/or sebum to reduce greasiness and shine, improve dry touch, and help keep powders and emulsions feeling lighter on skin.

Viscosity controlling agent

Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Helps absorb sebum for a reduced shine and drier skin feel.

Improves product thickness for better stability and spreadability.

Contributes to a lightweight, powdery touch in creams and powders.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit	Who Should Avoid
People with oily or combination skin seeking matte effects.	Those with known rice allergies, though rare.
Individuals preferring smooth, non-greasy textures in daily skincare.	People preferring strictly unmodified natural starches.
Users of powder-based or emulsion products for enhanced usability.	Individuals sensitive to modified cosmetic thickeners, despite low hazard ratings.

Safety Notes

Rated low hazard by safety assessments for cosmetic use.
Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Dimethylimidazolidinone Rice Starch

What is dimethylimidazolidinone rice starch?

A cross-linked rice starch used in cosmetics to absorb oils and control viscosity for better texture.

Is it safe for daily skincare use?

Yes, it carries a low safety rating and is non-comedogenic for most users.

Does it help with oily skin?

It absorbs sebum to promote a matte finish without greasiness.