What it is
Glyceryl ricinoleate is formed by esterifying glycerin with ricinoleic acid, a hydroxylated unsaturated fatty acid derived from castor oil. In formulas it contributes a smooth, cushiony skin feel and can help stabilize emulsions and disperse oils. It is commonly found in sunscreens, balms, and color cosmetics where a soft emollient film is desired.
Safety & warnings
Glyceryl ricinoleate is generally well tolerated as a fatty-acid ester emollient. Because it is castor-oil derived, the comedogenicity of the finished material depends on grade and use level; individuals prone to clogged pores may wish to monitor richer leave-on formulas. It is not a recognized fragrance allergen.
Origin & sourcing
Typically derived from castor oil (Ricinus communis), with the ricinoleic acid portion sourced from the plant and glycerin from plant or synthetic origin; it is produced by esterification.
Questions everyone asks
What does glyceryl ricinoleate do in a sunscreen?
It acts as an emollient and emulsifier, helping the formula spread smoothly, feel soft on skin, and keep the oil and water phases blended.
Is glyceryl ricinoleate the same as castor oil?
No. It is an ester made from ricinoleic acid, the main fatty acid in castor oil, combined with glycerin, so it behaves differently from raw castor oil.