Isomerized Linoleic Acid

Isomerized linoleic acid is a modified form of linoleic acid with rearranged double bonds that gives oils a lighter, more stable feel. Creams and serums use it for emolliency and a less greasy finish, though its targeted benefits aren't well established.
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Ingredient Snapshot

Overview
A modified plant oil that leaves skin feeling soft and lightly conditioned.
Category
Skin Conditioning, Oil Control
Type
Emollient

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Provides a soft, conditioned afterfeel with a lighter finish; any oil-balancing or clarifying effects remain tentative due to limited evidence.

Uses In Skincare & Cosmetics

Used in facial oils, gel-cream moisturizers, and oil-control serums to impart slip while minimizing greasiness.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally tolerated, but oxidation byproducts may increase irritation; prefer formulas with antioxidants and observe shelf life. Acne-prone or very sensitive users should patch test new products.

Is Isomerized Linoleic Acid a Good Ingredient?

Rated Fair because it offers emolliency and a lighter sensory profile, but solid clinical support for specific skin-corrective benefits is lacking. Being an unsaturated oil, it can also oxidize over time, which raises irritation potential and may congest acne-prone skin if the formula isn't stabilized, and that risk is what holds the rating down.

Products with Isomerized Linoleic Acid

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