At a glance
- CAS number
- 9004-65-3
- INCI name
- Hydroxypropyl Methylcellulose
- Function
- thickener, film_former, emulsifier, humectant
- Typical use level
- 0.1%–5%
- Solubility
- water
- Stable pH
- 3–11
CAS number and synonyms are sourced from PubChem. Function, usage levels, pH and compatibility are AI-assisted formulation guidance — verify against your supplier's technical data sheet and applicable regulations before use.
Also known as
HPMC Hypromellose Methocel Methylhydroxypropylcellulose Cellulose Hydroxypropyl Methyl Ether
Compatibility
Works well with:
Glycerin Propylene Glycol Carbomer Sodium Hyaluronate Panthenol Niacinamide
Use caution with:
High concentrations of electrolytes Strongly oxidizing agents
HPMC disperses readily in cold water and hydrates upon heating or prolonged mixing; it should not be added to hot water directly as it can form lumps. High salt concentrations can reduce viscosity and may cause salting-out at elevated electrolyte levels. It is generally compatible with a broad range of cosmetic actives and preservatives within its stable pH range.
Formulation notes
Hydroxypropyl Methylcellulose is a semisynthetic cellulose ether widely used in cosmetics as a thickener, film former, and rheology modifier for gels, lotions, and eye drops. It provides a smooth, non-tacky skin feel and forms a flexible film on skin and hair that can improve moisture retention. It is considered low-irritancy, non-ionic, and suitable for sensitive skin formulations.
Related ingredients
- Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate CopolymerThickener
- Hydroxypropyl Starch PhosphateThickener
- Xanthan GumThickener
- Arachidyl AlcoholEmollient
- Behenyl AlcoholEmollient
- Cetearyl AlcoholEmulsifier