The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Dimethyl Isosorbide

The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Dimethyl Isosorbide

The Powerful Active Solvent

Dimethyl Isosorbide (DMI) is a high-performance solvent and penetration enhancer used to dissolve stubborn actives and help carry them into the skin.

It dissolves ingredients that resist other solvents (like salicylic acid and some UV filters), boosts the delivery and efficacy of actives, and leaves a light, non-greasy feel.

Quick Insights

Ingredient Rating:

GOOD

Type of Ingredient:

Solvent

Intended Function:

A powerful solvent and penetration enhancer that dissolves and delivers difficult actives.

Common Applications:

Used across moisturizers, serums and lotions and treatment formulas.

Target Audience:

Brands formulating potent active systems (exfoliants, brighteners, sunscreens) needing strong solvency.

Also Known As:

Dimethyl Isosorbide, DMI

Benefits of Dimethyl Isosorbide

A powerful solvent and penetration aid that dissolves and delivers difficult actives.

Powerful Solvency: Dissolves hard-to-solubilize actives (e.g. salicylic acid, some filters).
Penetration Enhancement: Helps carry actives into the upper skin layers for better efficacy.
Light Feel: Leaves a clean, non-greasy finish.
Formulation Aid: Prevents recrystallization of dissolved actives.
Versatile: Compatible with water- and oil-based systems.

How It Works

Dimethyl Isosorbide is a small, amphiphilic solvent derived from sorbitol: its balanced polarity lets it dissolve a wide range of actives that other solvents can’t, and it temporarily loosens the skin’s surface lipids to improve the penetration of the actives it carries.

Formulating with Dimethyl Isosorbide

Dimethyl Isosorbide is used at low to moderate levels to dissolve and stabilize actives and enhance their delivery; add to the phase that carries the active. Because it boosts penetration, confirm the finished product’s tolerance and observe good manufacturing and preservation practice.

Safety Analysis

Dimethyl Isosorbide is well tolerated at cosmetic levels; because it enhances penetration, confirm overall formula tolerance. As always, substantiate the finished product’s safety (e.g. patch / HRIPT testing) in line with MoCRA requirements.

References

https://incidecoder.com/ingredients/dimethyl-isosorbide

https://cosmeticanalysis.com/cosmetic-ingredients/dimethyl-isosorbide

https://cosmetics.specialchem.com/inci-ingredients/dimethyl-isosorbide

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