What it is
Dimethyl isosorbide is a low-viscosity solvent valued for its ability to dissolve a wide range of active ingredients, including some organic UV filters and poorly soluble compounds. In sunscreens it helps create a clear, uniform formula and can improve the even spread and delivery of ingredients. It has a light, non-greasy character and good compatibility with both water- and oil-based systems.
Safety & warnings
Dimethyl isosorbide is generally well tolerated at cosmetic levels. Because it can enhance the penetration of other ingredients, formulators take this delivery effect into account when pairing it with potent actives.
Origin & sourcing
Synthetic solvent made from isosorbide, which is derived from sorbitol obtained from plant-based sugars.
Questions everyone asks
Why is dimethyl isosorbide added to sunscreen?
It is a versatile solvent that helps dissolve UV filters and other actives and supports their even distribution in the formula.
Is it plant-based?
It is synthetic but is made from isosorbide, which originates from plant-derived sugars via sorbitol.