Hydrogenated Castor Oil
Hydrogenated castor oil
- Role
- A castor oil derivative that adds body to a formula, including a stick.
- Catalog formulas
- 8
- Type
- Texture
- Verified
- 06.11.2026
What does this ingredient do in an antiperspirant?
Castor oil treated with hydrogen. Its INCI functions are viscosity controlling, emollient, skin conditioning and emulsifying.
Part of a system, not a label in isolation
In antiperspirant sticks it contributes to the structure and firmness of the stick. It has no effect on sweating.
The CIR assessed castor oil and its derivatives, including Hydrogenated Castor Oil, and found them safe in the present practices of use and concentration.
According to the CIR, sensitization to this group is seen infrequently in clinical experience, but positive reactions to castor oil and ricinoleic acid have been reported in people with existing dermatoses.
Not to be confused with PEG-40 Hydrogenated Castor Oil, a different INCI: a castor-oil-based solubilizer and emulsifier.
Products containing Hydrogenated Castor Oil
Links are based on the complete published INCI list for the exact product version.
Sources
The conclusions apply to the stated conditions and jurisdictions, not automatically to every concentration or product.
- CIR: Ricinus Communis (Castor) Seed Oil, Hydrogenated Castor Oil and related ingredients (2007) Supports: safety assessment, sensitization
- COSMILE Europe (Cosmetics Europe): Hydrogenated Castor Oil Supports: INCI functions, substance description