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Ingredient · INCI reference

C15-23 Alkane

A blend of medium-to-long-chain saturated hydrocarbons (C15 to C23) used as an emollient and skin-conditioning oil in sunscreens, tanning oils, and other leave-on products.

What it is

This is a mixture of linear and branched saturated hydrocarbons spanning roughly C15 to C23, giving a fluid, lightweight to medium-bodied oil. It serves as an emollient that softens and smooths the skin and as a carrier for oil-soluble ingredients. It is often used as a plant-derived alternative to mineral oil and similar hydrocarbon emollients, offering a clean, relatively non-greasy feel.

Safety & warnings

Saturated hydrocarbon emollients of this type are generally well tolerated and non-sensitizing. They are typically considered low to moderate on the comedogenicity scale, though heavier occlusive oils can be an issue for very acne-prone skin.

Origin & sourcing

A hydrocarbon emollient that may be synthesized from renewable plant-derived sources or from petrochemical feedstocks.

Questions everyone asks

Is this similar to mineral oil?

It is a hydrocarbon emollient with a comparable conditioning role, and it is often marketed as a plant-derived alternative to mineral oil.

What does it add to a tanning or sun oil?

It provides a smooth, conditioning oil base that helps the product glide over skin and carry other oil-soluble ingredients.

Sources & references

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