What it is
Hydroxypropylcellulose is a water-soluble cellulose derivative modified with hydroxypropyl groups, giving it useful thickening and film-forming properties. In sunscreens and skincare it helps build viscosity, stabilize formulas, and form a thin cohesive film on the skin that supports even spreading. It is a versatile, widely used texturizing polymer.
Safety & warnings
Cellulose derivatives like this are generally well tolerated and are commonly used as functional polymers in both cosmetics and pharmaceuticals with a low expectation of irritation. It is not a recognized fragrance allergen.
Origin & sourcing
Derived from cellulose, a plant-based polymer, which is chemically modified with hydroxypropyl groups.
Questions everyone asks
What role does hydroxypropylcellulose play in a formula?
It primarily thickens the product and can form a thin film that helps the formula spread evenly and stay stable.
Is hydroxypropylcellulose related to plain cellulose?
Yes. It is made by chemically modifying cellulose, a natural plant polymer, to make it water-soluble and useful as a thickener.