C11-12 Isoalkane

C11

7/10

Concern level

High concern

A branched-chain hydrocarbon solvent/emollient formerly labeled C11-12 Isoparaffin. It is used to improve slip, spreadability, and fast-drying sensory feel in cosmetics, especially lightweight skincare and color cosmetics. It is a mixture rather than a single defined molecule, so a single molecular weight does not apply. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/C11-12-Isoparaffin?utm_source=openai))

Pore-clogging

Low

Pregnancy

Safe

Regulatory

No data

Benefits

Improves Texture

Chemical Properties

Typical Concentration

1.00% - 50.00%

CAS Number: 64742-48-9

Skin Type Compatibility

dry skin6/10

oily skin8/10

sensitive skin6/10

acne prone7/10

mature skin6/10

normal skin8/10

Interactions

incompatible with:

Risks & Warnings

Low skin-risk in finished cosmetics, but it is a flammable hydrocarbon and can be harmful if misused in aerosol or bulk industrial settings. Eye contact may irritate; inhalation risk is mainly relevant during manufacturing or aerosolization. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/C11-12-Isoparaffin?utm_source=openai))

Vegan Cruelty-Free

Found In Products

Prequel

Prequel Skin Multi-Acid Milk Peel, Professional Exfoliating Solution. 15% Glycolic Acid Face Peel with Lactic Acid and Enzymes. Hydrating Chemical Exfoliant. Clinical Strength Formula, 7.6oz Bottle.