Diisostearyl Dimer Dilinoleate

Diisostearyl Dimer Dilinoleate is a high–molecular weight emollient/texture agent used to improve slip and reduce transepidermal water loss, typically included at a few percent to higher levels in lip and barrier products. It is not an acid, surfactant, or fragrance component and is generally non-sensitizing with a very low rate of irritation in patch testing, making it suitable for most sensitive skin. Rare individual intolerance is still possible (especially in severely compromised barriers), but clinically its irritation potential at typical use levels remains very low. Safety Notes: Diisostearyl Dimer Dilinoleate is used as an emollient/texture and gloss modifier, so it appears at low levels (~0.1–1%) in emulsions (lotions/creams) to improve slip and cushion without heavily increasing the oil phase. In anhydrous leave-on color cosmetics (lip oils, glosses, long-wear lipsticks, balms) it can function as a primary structuring emollient, with real-world consumer products commonly reaching 10–40% and some high-slip/gel-oil systems and specialty lip products observed up to ~60%. It is uncommon in rinse-off products except at trace-to-low levels where it may appear as part of a fragrance/emollient phase or deposited oil blend.