Ingredient review
C15-23 Alkane
INCI: C15-23 Alkane
A gentle, plant-derived emollient that provides a silky feel without clogging pores or causing irritation.
In plain English
C15-23 Alkane is a mixture of hydrocarbon molecules (alkanes) with chain lengths between 15 and 23 carbon atoms. It is typically derived from plant sources like sugarcane or coconut. In skincare, it acts as a lightweight emollient, meaning it softens and smooths the skin by forming a thin, breathable film that reduces water loss. Unlike heavy oils, it spreads easily and leaves a silky, non-sticky finish, making it a popular alternative to silicones or mineral oil.
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
C15-23 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 C15-23 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
A blend of saturated hydrocarbons (alkanes) with carbon chain lengths ranging from 15 to 23 atoms, usually sourced from renewable plant materials such as sugarcane or coconut oil.
How it works
When applied to the skin, C15-23 Alkane spreads into a thin, even layer that fills in microscopic gaps between skin cells. This film helps slow down water evaporation from the skin's surface (transepidermal water loss, or TEWL) while allowing the skin to breathe. Its low viscosity and surface tension give products a silky, lightweight texture that absorbs quickly without a greasy residue.
Pros
Lightweight and non-greasy
C15-23 Alkane absorbs quickly without leaving a sticky or heavy residue, making it ideal for daytime use and for people with oily or combination skin.
Plant-derived and eco-friendly
Sourced from renewable feedstocks like sugarcane, it is biodegradable and offers a sustainable alternative to petroleum-based ingredients like mineral oil.
Cons and cautions
Less occlusive for very dry skin
Because it is lightweight, it may not provide enough barrier reinforcement for severely dry or dehydrated skin, which may benefit from richer emollients like shea butter or petrolatum.
Potential for rare sensitivity
While generally well-tolerated, a small number of people with extremely reactive skin may experience mild irritation or stinging, especially in high concentrations.
Best for
- People with normal, combination, or oily skin who want lightweight hydration
- Anyone looking for a silicone-free or mineral-oil-free emollient
Use caution if
- Those with extremely dry or compromised skin barriers may need a richer occlusive
Usage tips
Safety summary
C15-23 Alkane is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, and is well-tolerated by most skin types. Rare cases of mild sensitivity have been reported.
Research notes
While not extensively studied on its own, alkanes of this chain length are well-established as safe emollients. Their safety is supported by decades of use in personal care and by regulatory approvals worldwide.
Common label clues
- Typical concentration
- 1–10%
- Regulatory status
- Approved for use in cosmetics globally, including by the U.S. FDA and EU CosIng database. No specific restrictions.
- Common uses
- Moisturizers, Serums, Cleansers, Sunscreens, Makeup removers
- Environmental note
- Derived from renewable plant sources (e.g., sugarcane) and is biodegradable, making it a more sustainable choice compared to petroleum-derived hydrocarbons.
Good to know
- C15-23 Alkane is often listed as a 'natural' alternative to silicones in 'clean' beauty products.
- It is considered non-comedogenic, meaning it is unlikely to clog pores.
Common questions
What is C15-23 Alkane in beauty products?
C15-23 Alkane is a mixture of hydrocarbon molecules (alkanes) with chain lengths between 15 and 23 carbon atoms. It is typically derived from plant sources like sugarcane or coconut. In skincare, it acts as a lightweight emollient, meaning it softens and smooths the skin by forming a thin, breathable film that reduces water loss. Unlike heavy oils, it spreads easily and leaves a silky, non-sticky finish, making it a popular alternative to silicones or mineral oil.
What does C15-23 Alkane do in a beauty product?
When applied to the skin, C15-23 Alkane spreads into a thin, even layer that fills in microscopic gaps between skin cells. This film helps slow down water evaporation from the skin's surface (transepidermal water loss, or TEWL) while allowing the skin to breathe. Its low viscosity and surface tension give products a silky, lightweight texture that absorbs quickly without a greasy residue.
Is C15-23 Alkane safe for most people?
C15-23 Alkane is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, and is well-tolerated by most skin types. Rare cases of mild sensitivity have been reported.
Who should be careful with C15-23 Alkane?
Those with extremely dry or compromised skin barriers may need a richer occlusive
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.