Hyd­Roxypropyl Methylcellulose

TL;DR. This ingredient is a water-soluble film-former and viscosity builder. It helps thicken gels and emulsions, suspend particles, stabilize foam, and improve slip on skin or hair.

What does Hyd­Roxypropyl Methylcellulose do in a cosmetic formula?

This ingredient is a water-soluble film-former and viscosity builder. It helps thicken gels and emulsions, suspend particles, stabilize foam, and improve slip on skin or hair.

Is Hyd­Roxypropyl Methylcellulose clean?

From a clean-beauty perspective, this ingredient is generally well tolerated, non-sensitizing, and not a common restricted-list concern. The main quality consideration is control of residual processing reagents from manufacture.

Is Hyd­Roxypropyl Methylcellulose sustainable?

This material is commonly made by chemically modifying plant-derived fiber sources such as wood pulp or cotton linters. It is biodegradable and not expected to bioaccumulate, although its manufacturing chemistry is more processed than simple plant oils or sugars.

Is Hyd­Roxypropyl Methylcellulose COSMOS-approved?

It is generally compatible with COSMOS-natural and COSMOS-organic formulations when supplied in compliant grades. Its Green Chemistry profile is solid because it uses a renewable backbone and has low environmental persistence, with a caveat for synthetic modification steps and reagent management.

How does Hyd­Roxypropyl Methylcellulose work chemically?

The molecule is a nonionic, water-soluble polysaccharide ether that hydrates into colloidal solutions and builds viscosity through polymer-chain entanglement. Typical use is about 0.1–2% for thickening or film formation, with broad pH stability around pH 3–11 and good compatibility with many surfactant systems, although salts can reduce hydration depending on grade.

Last updated 2026-05-14