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Researched by Helena DeMaria-Williams

Formula IngredientEmollient / Silicone

Dimethiconol

INCI: Dimethiconol

Dimethiconol is a thick, high molecular weight silicone (a hydroxyl-terminated polydimethylsiloxane) that is typically diluted in lighter silicone fluids like dimethicone or cyclopentasiloxane for easier formulation. It functions as an emollient, moisturiser, and antifoaming agent. When applied, it leaves a silky smooth, non-greasy protective film on the skin and hair, providing conditioning and moisture retention without heaviness.

Category

Emollient / Silicone

Irritation Risk

Low

Skin Types

all skin types, dry skin, sensitive skin

What does this do in a formula?

emollience, moisture retention, silky smooth feel, non-greasy protective film, hair conditioning, anti-frizz

Is Dimethiconol safe? Key considerations

Can Dimethiconol cause irritation?

Low Risk

Silicones as a class have an excellent safety profile. The closely related dimethicone has an irritancy rating of 0. Dimethiconol is reviewed as safe by the CIR panel. No EU Annex restrictions apply.

Does Dimethiconol increase sun sensitivity?

No Risk

No photosensitivity concerns associated with dimethiconol.

Is Dimethiconol safe during pregnancy?

Safe

No known pregnancy concerns. Silicones are chemically inert and are not absorbed through the skin in meaningful amounts.

How does Dimethiconol work?

Dimethiconol is a thick, high molecular weight silicone (a hydroxyl-terminated polydimethylsiloxane) that is typically diluted in lighter silicone fluids like dimethicone or cyclopentasiloxane for easier formulation. It functions as an emollient, moisturiser, and antifoaming agent. When applied, it leaves a silky smooth, non-greasy protective film on the skin and hair, providing conditioning and moisture retention without heaviness.

Which products contain Dimethiconol?

Shop products that contain Dimethiconol