Ingredient review
Di-C16-18 Alkyl Dimer Dilinoleate
INCI: DI-C16-18 ALKYL DIMER DILINOLEATE
A gentle, plant-based emollient that makes skin feel smooth and soft without clogging pores—great for sensitive or oily skin types.
In plain English
This ingredient is a type of oil-like substance made from fatty acids and a plant-derived dimer acid. It sits on the skin's surface to reduce water loss and give a silky, powdery finish. Unlike heavy oils, it feels lightweight and doesn't leave a greasy residue, making it popular in both skincare and makeup.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Di-C16-18 Alkyl Dimer Dilinoleate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Di-C16-18 Alkyl Dimer Dilinoleate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A diester formed from C16-18 fatty alcohols and dimer dilinoleic acid, which is derived from linoleic acid (a fatty acid found in plant oils like sunflower). It is a clear, viscous liquid that functions as an emollient and skin conditioner.
How it works
It forms a thin, breathable film on the skin that helps lock in moisture and smooth the skin's surface. Its molecular structure allows it to spread easily, improving the texture and application of products while reducing the sticky or heavy feel of other oils.
Pros
Lightweight feel
Unlike many oils, this ingredient leaves a silky, powdery finish that won't weigh down the skin or feel greasy.
Low irritation risk
It is generally well-tolerated and unlikely to cause breakouts or irritation, making it suitable for sensitive and acne-prone skin.
Cons and cautions
Not a humectant
It does not attract water to the skin, so it works best when paired with hydrating ingredients like glycerin or hyaluronic acid.
Limited moisturizing power for dry skin
For very dry or dehydrated skin, this ingredient alone may not provide enough moisture retention and may need a richer occlusive.
Best for
- People with oily or combination skin who want lightweight moisture
- Those who prefer non-comedogenic emollients in their routine
Use caution if
- Individuals with extremely dry skin may need a richer emollient or a humectant alongside it
Usage tips
Safety summary
Di-C16-18 Alkyl Dimer Dilinoleate is considered safe for cosmetic use. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in standard concentrations.
Research notes
While not extensively studied in clinical trials, its safety is supported by ingredient safety reviews and its widespread use in cosmetics. It is recognized as a gentle emollient with good skin compatibility.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. No known restrictions at typical concentrations.
- Common uses
- Moisturizers, Serums, Lipsticks, Foundations, Sunscreens
- Environmental note
- Derived from plant-based fatty acids and dimer acid, it is biodegradable and considered more eco-friendly than some synthetic silicones.
Good to know
- This ingredient is often used in lip products for a smooth, non-sticky application.
- It is derived from plant sources and is considered a sustainable alternative to some petroleum-based emollients.
Common questions
What is Di-C16-18 Alkyl Dimer Dilinoleate in beauty products?
This ingredient is a type of oil-like substance made from fatty acids and a plant-derived dimer acid. It sits on the skin's surface to reduce water loss and give a silky, powdery finish. Unlike heavy oils, it feels lightweight and doesn't leave a greasy residue, making it popular in both skincare and makeup.
What does Di-C16-18 Alkyl Dimer Dilinoleate do in a beauty product?
It forms a thin, breathable film on the skin that helps lock in moisture and smooth the skin's surface. Its molecular structure allows it to spread easily, improving the texture and application of products while reducing the sticky or heavy feel of other oils.
Is Di-C16-18 Alkyl Dimer Dilinoleate safe for most people?
Di-C16-18 Alkyl Dimer Dilinoleate is considered safe for cosmetic use. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in standard concentrations.
Who should be careful with Di-C16-18 Alkyl Dimer Dilinoleate?
Individuals with extremely dry skin may need a richer emollient or a humectant alongside it
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.