C9-12 Isoparaffin
AKA “Isoparaffin C9-12
Ingredient
Ingredient Facts
C9-12 isoparaffin
AKA: Isoparaffin C9-12
Ingredient · Solvent · EWG: 4
Synthetic
Solvent
Not Clean
C9-12 Isoparaffin is a mixture of branched aliphatic hydrocarbons with 9 to 12 carbons in the alkyl chain
CAS #
-
Form
Powder
See origin →
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Viscosity Controlling
Dissolves Ingredients
Controls Viscosity
Dissolves other ingredients
Controls product thickness
Traditional Use
Refined petroleum hydrocarbon developed for cosmetic use in the 20th century. Serves as a volatile emollient and solvent in makeup and skincare products.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR