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Methylcellulose

What Methylcellulose is & what it does

Methylcellulose is a cellulose derivative made by chemically modifying plant cellulose, typically from wood pulp or cotton. In skincare and sunscreen formulas it works as a thickener, film former, and stabilizer, helping control texture and keep emulsions uniform. A notable property is that it can form gels that thicken when warmed, which makes it useful for fine-tuning a product's flow and feel.

What does methylcellulose do in skincare?

Methylcellulose works mainly as a thickener, film former, and stabilizer in skincare and sunscreen formulas. It helps control the texture and viscosity of a product and keeps emulsions uniform. By forming a thin film, it can also improve how a product feels and stays on the skin.

Is methylcellulose natural or synthetic?

Methylcellulose is considered semi-synthetic. It starts from natural plant cellulose, usually wood pulp or cotton, which is then chemically modified to create the finished ingredient. So while its source is plant-based, the molecule is a processed derivative.

Is methylcellulose vegan?

Methylcellulose is typically vegan, since it is derived from plant cellulose rather than animal sources. Most cosmetic-grade methylcellulose is produced from wood pulp or cotton. As always, a brand's specific certifications confirm whether a finished product is vegan.

Sunscreens with Methylcellulose

We rate 14 sunscreens that contain it, showing the top 10 by overall score:

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