What Is C13-14 Isoparaffin?
C13-14 Isoparaffin is a blend of highly branched alkanes that contain 13 to 14 carbon atoms. These hydrocarbons come from exceptionally purified fractions of petroleum that are subjected to hydrocracking, isomerization and precise distillation to ensure they are colorless, odorless and stable. Cosmetic chemists turned to this ingredient in the mid-1900s when they needed a lighter feel than traditional mineral oil but with the same ability to soften skin. Over time its purity profile and versatility secured its place in modern formulating toolkits.
After crude oil is refined into different cuts, the relevant fraction is cleaned of impurities, broken down under high pressure, then rearranged into branched chains. The branching keeps the molecules fluid even at lower temperatures, giving products a silky slip rather than a greasy drag.
You will spot C13-14 Isoparaffin in a wide range of items such as lightweight moisturizers, anti-aging serums, wash-off masks, liquid foundations, eye makeup removers, hair pomades and deodorant sticks. Anywhere a formulator wants smooth spreadability without a heavy residue this ingredient is a go-to.
C13-14 Isoparaffin’s Cosmetic Benefits/Uses
This ingredient serves two main jobs in a formula, each bringing its own advantage.
- Emollient – coats skin or hair in a thin, non-sticky layer that fills in rough spots, leaving the surface feeling soft, supple and conditioned
- Solvent – dissolves oil-soluble actives, fragrances and pigments so they disperse evenly, helping products stay uniform and apply smoothly
Who Can Use C13-14 Isoparaffin
C13-14 Isoparaffin fits most skin types including normal, dry, combination and oily skin because it forms a lightweight surface layer rather than penetrating deeply. People with highly acne-prone or extremely sensitive skin might choose to keep usage minimal if they find heavy occlusives trigger congestion, though many still tolerate it without trouble.
The ingredient is derived from petroleum, not animals, so it is suitable for vegans and vegetarians as long as the rest of the formula is also free of animal-based components.
No evidence links C13-14 Isoparaffin to reproductive harm which means products containing it are generally viewed as safe during pregnancy or while breastfeeding. This is not medical advice; anyone pregnant or nursing should review their routine with a doctor to stay on the safe side.
The ingredient does not raise sun sensitivity and has no known interactions with common active skincare agents. It is also odorless, making it a good option for users who avoid fragrances.
Potential Side Effects/Adverse Reactions
Responses to topical C13-14 Isoparaffin can differ between individuals. The effects listed below are potential outcomes only and for most users they are unlikely when the ingredient is employed correctly by the manufacturer.
- Clogged pores or comedones in very acne-prone skin
- Mild temporary redness on already compromised or broken skin
- Contact dermatitis in rare cases of hydrocarbon sensitivity
- Product build-up on hair that may leave strands looking limp when used in leave-in styling formulas
If any irritation, itching or persistent breakouts occur stop using the product and seek advice from a healthcare professional.
Comedogenic Rating
Rating: 1/5. C13-14 Isoparaffin forms a breathable, low–density film that sits on top of skin instead of seeping into pores, so it is far less likely to trap debris than heavier mineral oils. Most dermatology texts place highly refined isoparaffins at the lower end of the comedogenic scale, though individual responses can vary. In practical terms this means the ingredient is generally acceptable for acne-prone or breakout-prone users, especially in rinse-off or lightweight leave-on products. Extremely oily or congested skin types might still prefer to limit usage if they notice any increase in clogged pores.
Because C13-14 Isoparaffin is fully saturated and chemically inert it does not oxidize into pore-clogging by-products, another reason its comedogenic potential stays low over a product’s shelf life.
Summary
C13-14 Isoparaffin mainly acts as an emollient and a solvent. Its branched hydrocarbon structure creates a silky surface layer that smooths rough texture while also dissolving oil-soluble ingredients so formulas stay uniform and glide on easily. Thanks to these dual talents it can replace heavier mineral oil and help give modern creams, lotions and makeup a lighter feel.
The ingredient enjoys steady popularity with formulators who want a clean-feeling alternative to traditional petrolatum derivatives, though it is not as buzz-worthy as trendier plant oils or silicones. Still you will spot it across a wide range of skincare, haircare and color cosmetics because it is affordable, stable and versatile.
Safety data show C13-14 Isoparaffin is non-sensitizing, non-phototoxic and free of reproductive concerns when used as directed. As with any new product, it is smart to perform a small patch test first to make sure your skin agrees with the full formula.