Dimethyl Isosorbide (DMI)

Dimethyl Isosorbide (DMI) is a high-purity, clear, colorless to slightly yellow liquid used in skincare and haircare formulations as a solvent, carrier, and penetration enhancer.

It is derived from renewable corn sugar (via sorbitol and isosorbide) and is designed to help active ingredients permeate the skin more effectively while improving formulation texture and stability.

In cosmetics, DMI is valuable for helping water-soluble actives dissolve better, delivering actives deeper into the skin layers, reducing residue or greasiness and enhancing overall feel and performance of the final product.

INCI Name: Dimethyl Isosorbide

⚗️Function

• Solvent for cosmetic actives
• Delivery enhancement/carrier for actives
• Texture modifier (improves spreadability, reduces greasiness)
• Penetration enhancer (helps actives move effectively into epidermis)
• Stability enhancer (for actives susceptible to hydrolysis or recrystallization)

💧Solubility

Soluble in water and many organic solvents (e.g., isopropanol, propylene glycol)

⚖️ Usage Rate

Typical usage: 1% – 10% of final formulation.

🧭 Formulation pH Range

Works well in typical skincare pH ranges; e.g., some data suggest stable use around pH 5.5 – 8.0.