What Is C24-28 Olefin?
C24-28 Olefin is a blend of long chain alpha olefins that each contain between 24 and 28 carbon atoms. These molecules are unsaturated hydrocarbons, meaning they include a double bond that keeps the material fluid and workable at room temperature. The ingredient is usually sourced from petroleum refining where waxy fractions are cracked to yield even numbered carbon chains, although newer processes can start with plant derived fatty alcohols that are dehydrated to form the same olefin structure.
Interest in long chain olefins for personal care grew in the late twentieth century when formulators looked for lighter alternatives to heavy mineral oils and traditional waxes. The material offered a silky feel plus excellent stability, so it quickly found a place in premium skin care launched during the 1990s. Today it is produced on an industrial scale through oligomerization of ethylene followed by fractionation that isolates the C24-C28 cut, then purification to remove trace byproducts.
You will come across C24-28 Olefin in moisturizers, night creams, anti-aging serums, tinted foundations, lip balms, stick sunscreens and many hair conditioning products. It often works alongside silicones, esters or plant oils to adjust thickness and slip without adding greasiness.
C24-28 Olefin’s Cosmetic Benefits/Uses
Formulators rely on this ingredient mainly for one key role:
Skin conditioning: C24-28 Olefin forms a light breathable film that softens skin, smooths rough patches and helps lock in moisture. Its long carbon chains create a velvety texture that improves spreadability of creams and balms, enhancing the overall sensory experience while supporting a hydrated healthy looking complexion.
Who Can Use C24-28 Olefin
C24-28 Olefin suits most skin types, from dry and mature to normal and combination, because its light film helps keep moisture in without leaving a heavy residue. Oily or acne-prone skin can also tolerate it since the ingredient is not greasy, but those highly sensitive to any petro-derived ingredients might choose to avoid it.
The olefin itself is a hydrocarbon without animal content. When sourced from petroleum or plant feedstocks no animal by-products are involved, so it is considered suitable for vegans and vegetarians. If plant origin matters to you, check with the brand as some suppliers still rely on petroleum.
Current research shows no known issues for pregnant or breastfeeding women when the ingredient is used in topical cosmetics. This is not medical advice; anyone who is pregnant or nursing should ask a healthcare professional before adding new skincare products.
C24-28 Olefin does not make skin more sensitive to sunlight and has no known impact on photosensitivity.
Potential Side Effects/Adverse Reactions
Responses to any cosmetic ingredient can differ from person to person. The points below cover possible side effects of C24-28 Olefin, though most users will not notice any problems when the product is formulated and used as directed.
- Mild skin irritation
- Contact dermatitis in people with a specific hydrocarbon sensitivity
- Eye irritation if the raw material is accidentally rubbed into the eyes
If you experience redness, itching or any other unwanted reaction, stop using the product and seek advice from a medical professional.
Comedogenic Rating
Rating: 1 / 5
C24-28 Olefin is a large, stable hydrocarbon that sits on the surface of skin and is not readily absorbed into pores. Its molecular size and low polarity mean it is unlikely to mix with sebum or harden inside follicles, so the risk of clogging is minimal. For that reason formulators treat it much like mineral oil or squalane, both of which carry similarly low scores.
This low rating means the ingredient is generally considered suitable for people prone to acne or breakouts.
Because comedogenicity can be influenced by the overall formula and concentration, how the full product is designed will always matter more than any single raw material.
Summary
C24-28 Olefin is used mainly for skin conditioning. By forming a thin breathable film it softens rough areas, improves slip and helps prevent moisture loss, giving products a silky after feel without heaviness.
While it is not a trending buzzword like hyaluronic acid or niacinamide, it is a quiet workhorse found in many mid to high end creams, balms and color cosmetics where a light elegant texture is desired.
Safety data show a very low risk of irritation or sensitization when applied topically, so the ingredient is widely regarded as safe for daily use. As with any new product, it is smart to patch test first to make sure your skin agrees with the complete formula.