C11-13 Isoparaffin

C11-13 Isoparaffin is a hydrocarbon-derived solvent—a clear, colourless liquid derived from mineral oil refining. In skincare formulations, it functions as a solubiliser, helping to dissolve and distribute other ingredients evenly throughout a product.It belongs to a class of ingredients called isoparaffins, which are commonly used in cosmetics to improve texture and aid ingredient stability. Found in approximately 0.1% of skincare products, it tends to appear in formulations where ingredient compatibility or product spreadability is a priority.

C11-13 Isoparaffin works by dissolving ingredients that would otherwise be insoluble in the product's base. This allows formulators to include a wider range of actives in a single product without phase separation or grittiness.Because it is an occlusive hydrocarbon, it also sits on the skin surface, creating a light barrier that can help reduce moisture evaporation—though this effect is typically subtle in skincare formulations where it is present in small amounts.

C11-13 Isoparaffin is a solvent added during formulation, so you do not control its concentration during use. Simply use the finished product as directed by the manufacturer. If you are concerned about potential effects on oily or acne-prone skin, check the ingredient list before purchase and consider patch-testing on a small area first.

C11-13 Isoparaffin is generally well-tolerated and permitted in cosmetics across major regulatory regions. Those with very oily skin or a history of fungal acne may wish to avoid it, though individual responses vary.