Ingredient review
C13-15 Alkane
INCI: C13-15 Alkane
A silky, plant-derived emollient that feels lightweight and non-greasy, making it a great alternative to silicones.
In plain English
C13-15 Alkane is a type of oil derived from plants like coconut or palm. It feels very light and silky on the skin, similar to silicone, but it's made from natural sources. It helps other ingredients spread easily and leaves a smooth, non-sticky finish.
Review score
Safety, usefulness, and evidence
Strong fit for many routines
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
- natural
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Easy yes for most routines
C13-15 Alkane 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 C13-15 Alkane.
- 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
C13-15 Alkane is a hydrocarbon mixture (13 to 15 carbon atoms long) produced by hydrogenating plant-derived fatty acids. It is a clear, odorless liquid that acts as a lightweight emollient and solvent in cosmetics.
How it works
It sits on the skin's surface to reduce water loss (like a gentle barrier) while providing a silky, cushiony feel. Because it spreads easily, it helps other ingredients glide on smoothly and can help dissolve oil-soluble ingredients.
Pros
Lightweight feel
Unlike heavier oils, C13-15 Alkane absorbs quickly and leaves no greasy residue, making it ideal for daytime use and oily skin.
Silicone alternative
It provides a similar silky, smooth texture to silicones but is derived from natural sources, appealing to 'clean beauty' fans.
Cons and cautions
Sourcing concerns
It is often derived from palm oil, which can be associated with deforestation and habitat loss unless certified sustainable.
Limited research
While generally considered safe, there is less long-term independent research on this ingredient compared to traditional silicones or mineral oil.
Best for
- People who prefer lightweight, non-greasy moisturizers
- Those looking for a silicone-free alternative
- Oily or combination skin types
Use caution if
- Anyone with a confirmed allergy to this specific ingredient (extremely rare)
Usage tips
Safety summary
C13-15 Alkane is considered very safe for topical use. It has low irritation and comedogenic potential. The main concern is environmental, related to palm oil sourcing.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel and EU CosIng support its use. Most evidence is based on its chemical similarity to other safe alkanes and its long history of use.
Common label clues
- Typical concentration
- 1–20% depending on formulation
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA (as a cosmetic ingredient). No concentration restrictions are specified.
- Common uses
- Moisturizers, Serums, Sunscreens, Makeup removers, Hair products
- Environmental note
- Sourcing from sustainable palm or coconut is important. Look for RSPO-certified palm derivatives or coconut-based versions for a lower environmental impact.
Good to know
- C13-15 Alkane is often listed as 'Coconut Alkane' or 'C13-15 Alkanes' on labels.
- It is biodegradable and considered more eco-friendly than some petroleum-based alternatives.
Common questions
What is C13-15 Alkane in beauty products?
C13-15 Alkane is a type of oil derived from plants like coconut or palm. It feels very light and silky on the skin, similar to silicone, but it's made from natural sources. It helps other ingredients spread easily and leaves a smooth, non-sticky finish.
What does C13-15 Alkane do in a beauty product?
It sits on the skin's surface to reduce water loss (like a gentle barrier) while providing a silky, cushiony feel. Because it spreads easily, it helps other ingredients glide on smoothly and can help dissolve oil-soluble ingredients.
Is C13-15 Alkane safe for most people?
C13-15 Alkane is considered very safe for topical use. It has low irritation and comedogenic potential. The main concern is environmental, related to palm oil sourcing.
Who should be careful with C13-15 Alkane?
Anyone with a confirmed allergy to this specific ingredient (extremely rare)
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.