Common Name(s): Dimethiconol isostearate,dimethiconol isostearic acid (branched c18) ester,silicone-isostearic acid (branched c18) hybrid emollient
DESCRIPTION
What It Does: Provides a light, silky skin feel combined with the conditioning benefits of isostearic acid (branched c18).
Why It's Used: Combines the non-greasy, quick-absorbing feel of silicone with the nourishing fatty acids of isostearic acid (branched c18); ideal for luxury lightweight formulas.
How It Works: Ester bond links dimethiconol (silicone) with isostearic (branched) fatty acids from isostearic acid (branched c18); the silicone backbone provides low surface tension and smooth glide; the isostearic acid (branched c18) ester tail provides substantive conditioning.
Typically Found In: Lightweight serums,silicone-butter formulas,premium skin care,hair conditioners
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Skin conditioning,film forming,hair conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%โ5%
SOURCING & ETHICS
Vegan Status: Conditional - supplier confirmation required
Halal Status: Yes
Source Notes: Dimethiconol (silicone, synthetic); isostearic (branched) from isostearic acid (branched c18) (natural/plant origin); silicone-natural hybrid. [audit 2026-07-29 rev2: status downgraded on audit. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low
Sensitivity Concerns: Generally well tolerated; silicone-derived.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile. ewg score: 1โ2.
Works Well With: Dimethicone,cyclopentasiloxane,isostearic acid (branched c18) butter,natural emollients
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Dimethiconol isostearate uses branched isostearic acid (instead of linear stearic) providing a non-crystallizing, liquid form of dimethiconol stearate; provides silicone conditioning without the waxy/solid character of the stearate analog.
Last Verified: 2026-03-28
Primary Sources: Cosing database,inci dictionary