ECOHANCE Soft BOL - silicone

Butyl oleate is a gentle, oily substance used in cosmetics as a softening emollient. It occurs naturally in various animal and vegetable fats, but in commercial cosmetics it is usually produced synthetically by esterifying oleic acid with butanol. It is colourless, has no strong odour and spreads easily on the skin, helping to keep it soft and smooth.

Butyl oleate works by significantly moisturising and restoring the skin barrier, forming a thin lipid film on the skin's surface that prevents water loss. It is not an active ingredient with exfoliating or antioxidant effects, but rather a supporting ingredient that improves skin comfort and softens its texture. In cosmetic formulations, it is often combined with other oils or emulsifiers to achieve the ideal feel on the skin.

Butyl oleate is particularly suitable for dry, dehydrated and sensitive skin that needs extra nourishment and help locking in moisture. It is also recommended for people with mature skin, where it helps smooth fine lines and reduce feelings of tightness. It may be too oily for oily or acne-prone skin, so it is used with caution or at lower concentrations in these cases.

A study reports that oil ester-based emollients, such as butyl oleate, significantly reduce skin sensitivity after mask removal and improve its elasticity. An experimental test with oleic acid-based emollients confirmed that the skin stays hydrated for longer and is less prone to irritation (Journal of Cosmetic Science, 2019). Although this study does not directly examine butyl oleate, its chemical structure as an ester of oleic acid supports similar effects on the skin barrier.