Hydroxypropyl Methylcellulose (HPMC) is a semi-synthetic cellulose derivative used in skincare and cosmetics as a thickening agent, emulsion stabilizer, film former, and binder. It is generally considered safe, non-toxic, and non-irritating in topical formulations.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation | Rare | Occasional transient redness or irritation, typically in sensitive individuals. |
Contact dermatitis / allergic reaction | Very rare | Hypersensitivity reactions are exceptionally uncommon given its inert nature. |
Eye irritation | Rare | May cause mild stinging if products contact the eyes. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.