What it is
Ethylcellulose is made by ethylating cellulose, producing a versatile polymer that forms tough yet flexible films and can thicken or bind a formula. In sunscreens and color cosmetics it helps create an even, long-wearing layer and contributes to a smooth feel. It is also widely used as a binder and coating material across cosmetic and pharmaceutical products.
Safety & warnings
Considered inert and non-irritating with a long history of safe topical and oral use; not associated with sensitization at cosmetic levels.
Origin & sourcing
Semi-synthetic polymer made by chemically modifying cellulose, which is derived from plant material such as wood pulp or cotton.
Questions everyone asks
What role does ethylcellulose play in sunscreen?
It is a film former and binder that helps build an even, flexible, longer-wearing layer on the skin and contributes to a smooth texture.
Is ethylcellulose natural?
It is semi-synthetic: it starts from plant-derived cellulose, such as wood pulp or cotton, that is then chemically modified.