What Is C13-14 Isoalkane?
C13-14 Isoalkane is a clear, lightweight liquid made up of branched-chain hydrocarbons that each contain 13 or 14 carbon atoms. It is typically sourced from highly refined petroleum distillates that are treated to remove impurities, then put through processes like hydrocracking and isomerization to create stable, low-odor isoalkanes. The result is a substance that spreads easily on skin yet evaporates or absorbs without leaving a greasy feel.
The cosmetic industry began using C13-14 Isoalkane in the late twentieth century as formulators searched for alternatives to heavier mineral oils. Its favorable safety profile, low irritation potential and versatility quickly made it popular in a wide range of leave-on and rinse-off products. Today you will find it in primers, long-wear foundations, liquid lipsticks, sunscreens, deodorants, cleansing balms, makeup removers, anti-aging serums, moisturizers and hair-styling sprays, where it helps dissolve active ingredients, enhance spreadability and give a silky finish.
C13-14 Isoalkane’s Cosmetic Benefits/Uses
In skin and hair care formulas C13-14 Isoalkane serves two key roles that improve both product performance and sensory feel:
- Skin conditioning: Forms a lightweight protective layer that softens skin, reduces moisture loss and leaves a smooth, non-sticky after-feel which consumers often describe as velvety
- Solvent: Efficiently dissolves oils, pigments and UV filters so actives can be evenly distributed, helps thin heavy formulations for easier application and contributes to quick dry-down in long-wear cosmetics
Who Can Use C13-14 Isoalkane
C13-14 Isoalkane’s weightless texture makes it suitable for most skin types, including oily and combination skin that shy away from heavier oils. Dry skin can also benefit when the ingredient is paired with richer emollients, though on its own it will not provide the heavy occlusion extremely dry complexions often need. Sensitive skin generally tolerates it well because the material is highly refined and free of fragrance and known allergens.
As a petroleum derived ingredient free from animal by-products, C13-14 Isoalkane is considered vegan and vegetarian friendly. No animal testing is required for its production in most regions that follow modern safety regulations, making it a common choice in cruelty free formulas.
Current safety data indicate no specific risks for pregnant or breastfeeding women when C13-14 Isoalkane is applied topically in cosmetic concentrations. This is not medical advice and anyone who is pregnant or nursing should review any skincare product with a qualified healthcare professional to be extra cautious.
The ingredient does not sensitize skin to sunlight, so it does not add any risk of sunburn or hyperpigmentation. One point to remember is that products delivered as aerosols or sprays containing isoalkanes are flammable until fully dry, so keep them away from open flames when applying.
Potential Side Effects/Adverse Reactions
Reactions to C13-14 Isoalkane differ from person to person. The effects listed below are possible outcomes, yet most users will not experience them when the ingredient is used at standard cosmetic levels.
- Mild skin irritation or redness in extremely sensitive individuals
- Transient eye stinging if the product accidentally gets into the eyes
- Minor breakouts in people who are highly prone to acne despite its low comedogenic rating
- Inhalation discomfort such as coughing if aerosol products are sprayed in poorly ventilated areas
- Dryness for users who rely on it as the sole emollient without additional moisturizers
If any of these reactions occur discontinue use and consult a healthcare professional if symptoms persist or worsen.
Comedogenic Rating
Rating: 1/5. C13-14 Isoalkane is a lightweight, highly refined hydrocarbon that sits on the skin surface without clogging pores or mixing with the skin’s own sebum in a way that would trap dead cells. Its molecular size and branched structure let it spread thinly then evaporate or absorb, keeping pore blockage risk very low. For this reason it is generally suitable for people prone to acne or breakouts. Because every complexion reacts differently extremely acne-sensitive users may still prefer to monitor skin when first introducing a product containing it.
Summary
C13-14 Isoalkane works mainly as a skin-conditioning agent and solvent. It softens skin by forming a light protective film that reduces moisture loss and imparts a silky finish while its dissolving power spreads pigments filters and actives evenly for smoother application and faster dry-down. These qualities have made it a regular pick in primers long-wear makeup sunscreens and cleansing balms although it is not as widely recognized by consumers as ingredients like silicones or glycerin.
Safety studies show a very low risk of irritation sensitization or toxicity when used at cosmetic levels so most people can use it with confidence. As with any new skincare ingredient performing a simple patch test when trying a fresh formula helps ensure personal tolerance and keeps skin happy.