C8-9 Isoparaffin

AKA: Isoparaffin C8-9

Synthetic

Solvent

Clean

Alkanes, C8-9-iso

CAS #

246538-71-6

Form

Powder

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 distillate developed for cosmetic use in the 20th century. Used as a light, non-greasy emollient and solvent in skincare and color cosmetic products.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not an Irritant

ewg-1

medical-approval

pregnancy-nursing-safe

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types, gentle

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: CosIng · EWG · CIR