Hydroxypropyl Methylcellulose Stearoxy Ether
Hydroxypropyl methylcellulose stearoxy ether
- Role
- A modified cellulose that controls the viscosity of a formula.
- Catalog formulas
- 3
- Type
- Texture
- Verified
- 09.11.2026
What does this ingredient do in an antiperspirant?
The reaction product of hydroxypropyl methylcellulose and stearyl glycidyl ether, i.e. a cellulose polymer with stearyl groups attached. INCI function: viscosity controlling.
Part of a system, not a label in isolation
It helps set the thickness and uniformity of the base. It does not reduce sweating.
The CIR summary table (2014) lists the parent polymer Hydroxypropyl Methylcellulose as safe (up to 4%, amended assessment of 2009). The sources used contain no separate CIR conclusion for the stearoxy ether itself.
It is generally used as a supporting texture ingredient; an individual reaction to the finished product is possible.
Not the same as Hydroxypropyl Methylcellulose: the stearoxy ether has stearyl groups attached to the cellulose chain, while the parent polymer has more functions in CosIng, including film forming and emulsion stabilising.
Products containing Hydroxypropyl Methylcellulose Stearoxy Ether
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.
- EU CosIng: Hydroxypropyl Methylcellulose Stearoxy Ether Supports: function, substance identity
- COSMILE Europe (Cosmetics Europe): Hydroxypropyl Methylcellulose Stearoxy Ether Supports: substance description
- CIR: Quick Reference Table (summary of conclusions, 2014) Supports: safety conclusion
- EU CosIng: Hydroxypropyl Methylcellulose Supports: INCI functions