What it is
Diethyl sebacate is a low-viscosity ester formed from sebacic acid and ethanol. It spreads easily and gives a light, non-tacky skin feel, and it can dissolve other ingredients, making it useful as both an emollient and a solvent. In sunscreens it can help spread and carry oil-soluble components while keeping the texture light.
Safety & warnings
Diethyl sebacate is generally well tolerated in topical use, with low expected irritation potential. It is not a known fragrance allergen and is a light ester rather than a heavy comedogenic oil.
Origin & sourcing
Synthetic ester of sebacic acid, which is commonly derived from castor oil, reacted with ethanol.
Questions everyone asks
What does diethyl sebacate do in sunscreen?
It acts as a lightweight emollient and solvent, helping the product spread easily and dissolve oil-soluble ingredients.
Is diethyl sebacate heavy on skin?
No. It is a low-viscosity ester that gives a light, non-tacky feel.