C11-13 Isoparaffin
AKA “Hydrocarbon, Mineral oil fraction
Synthetic
Ingredient Facts
C11-13 isoparaffin
AKA: Hydrocarbon, Mineral oil fraction
Synthetic · Emollient · EWG: 1
Synthetic
Emollient
Solvent
Skin Conditioner
Synthetic
Clean
A lightweight solvent that helps blend and distribute other ingredients evenly throughout the formula, ensuring a smooth application.
CAS #
246538-78-3
Form
Liquid
See origin →
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Dissolves Ingredients
Dissolves other ingredients
Traditional Use
Synthetic hydrocarbon developed in modern cosmetics as a volatile solvent and emollient. Designed to provide rapid absorption and a dry-feel finish compared to heavier mineral oils.
Skin Types
all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Manuka honey activates the aryl hydrocarbon receptor: Imp...
Abdullah A Alangari, Matin D Ashoori, Wisam Alwan, Hannah R Dawe, Brigitta Stockinger, Jonathan N Barker + 2 more
Pharmacological research, 2023
Manuka honey activates the aryl hydrocarbon receptor: Imp...
Abdullah A Alangari, Matin D Ashoori, Wisam Alwan, Hannah R Dawe, Brigitta Stockinger, Jonathan N Barker + 2 more
Pharmacological research, 2023
C11-13 Isoparaffin
European Commission
EU Cosmetic Ingredient Database (CosIng)
C11-13 Isoparaffin
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Aryl Hydrocarbon Receptor in Atopic Dermatitis and Psoriasis.
Furue M, Hashimoto-Hachiya A, Tsuji G
International journal of molecular sciences, 2019
Comparative in vivo toxicity of topical JP-8 jet fuel and its individual hydrocarbon components: identification of tridecane and tetradecane as key co
Muhammad F, Monteiro-Riviere NA, Riviere JE
Toxicologic pathology, 2005
DNA adduct formation in human and mouse skin by mixtures of polycyclic aromatic hydrocarbons.
Phillips DH, Schoket B, Hewer A, Grover PL
IARC scientific publications, 1990
Verified Feb 2026
Data: CosIng · EWG · CIR