What Is C14-17 Alkane?
C14-17 Alkane is a clear odorless liquid made of straight-chain hydrocarbons that each contain between 14 and 17 carbon atoms. Most batches come from highly refined petroleum fractions, though some manufacturers now start with plant oils that are broken down and hydrogenated to reach the same carbon length. The mixture was introduced to cosmetics in the early 2000s as brands looked for lightweight alternatives to mineral oil and certain silicones. Production begins with fractional distillation to isolate the desired carbon range, followed by additional purification steps that remove impurities and leave a stable, skin-friendly liquid.
Because it is nonpolar, nonreactive and virtually weightless on the skin, C14-17 Alkane shows up in many product categories. You will find it in moisturizers, sunscreens, facial oils, cleansing balms, makeup removers, foundations, lipsticks, hair serums and even sheet mask essences where it helps deliver a smooth silky feel.
C14-17 Alkane’s Cosmetic Benefits/Uses
In personal care formulas this ingredient serves one main purpose.
Solvent – C14-17 Alkane dissolves oil-soluble actives, fragrances and pigments so they disperse evenly in the finished product. Its light texture helps thin out heavy oils, leading to better spreadability and a non-greasy afterfeel. The result is a formula that applies smoothly, absorbs quickly and keeps the active ingredients stable over time.
Who Can Use C14-17 Alkane
Because it is lightweight and non-comedogenic, C14-17 Alkane suits most skin types including dry, oily and combination skin as well as sensitive or acne-prone complexions. It does not clog pores or leave a heavy residue, so even those who struggle with breakouts usually tolerate it well. Vegans and vegetarians can use products containing this ingredient because it is made only from petroleum fractions or plant oils, neither of which involve animal-derived materials or animal testing in the production of the raw material itself. Current safety assessments show no known reproductive risks, so pregnant or breastfeeding individuals may use it; this is not medical advice and anyone who is expecting or nursing should confirm product choices with a healthcare provider. C14-17 Alkane does not cause photosensitivity and there are no known interactions with sunscreen filters or other common skincare ingredients.
Potential Side Effects/Adverse Reactions
Side effects from topical use of C14-17 Alkane vary from person to person. The following list covers potential reactions only; when formulated correctly most users experience none of these issues.
- Mild skin irritation or redness in very sensitive individuals
- Contact dermatitis in the rare event of an allergy to hydrocarbon solvents
- Temporary eye stinging if the product accidentally gets into the eyes
- Folliculitis or small surface bumps if applied in extremely heavy layers on occlusion-prone areas
If you notice any of these reactions stop using the product and seek guidance from a medical professional.
Comedogenic Rating
Rating: 0 out of 5. C14-17 Alkane consists of lightweight straight chain molecules that spread quickly without forming an occlusive film so they do not trap dead cells or sebum in pores. Studies on human volunteers and classic rabbit ear assays have shown no increase in comedone formation even at high concentrations, explaining the zero score.
This makes the ingredient suitable for people who are prone to acne or regular breakouts.
Keep in mind that overall pore clogging risk comes from the full formula. If C14-17 Alkane is blended with rich butters or waxes the product’s total comedogenicity could still rise.
Summary
C14-17 Alkane’s main job is to act as a light non greasy solvent that evenly distributes oil soluble actives, scents and pigments while improving spreadability. Its straight chain hydrocarbon structure lets it thin heavier lipids so products absorb faster and leave a silky finish.
The ingredient has gained steady popularity as brands look for silicone or mineral oil replacements, yet it remains a behind the scenes performer that most consumers have never heard of.
Safety assessments classify it as non sensitizing, non toxic and non comedogenic, so it is generally considered safe for topical use. As with any new skincare product it is wise to do a quick patch test first to make sure your skin agrees with the formula.