Isoeicosane
molecular structure · PubChem
AKA: 52845-07-5, ORISTAR IES, CREASIL IE, FANCOL IE, CREASIL IE CG, LIQUID ISOPARAFFIN, ISOEICOSANE [INCI]
Synthetic
Emollient
Solvent
Skin Conditioner
Clean
Hydrocarbons, C4, 1,3-butadiene-free, polym., pentaisobutylene fraction, hydrogenated
Formula
C20H42
Mol. Weight
282.50
CAS #
93685-79-1
Form
Liquid
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks In Moisture
Traditional Use
Synthetic hydrocarbon developed for use as a lightweight, volatile emollient in modern cosmetics. Part of the synthetic hydrocarbon family created to replace heavier mineral oils with minimal traditional use history.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR