Ingredient dictionary

Cellulose

Cellulose is the main structural fiber in plant cell walls. In skincare and makeup, it works mainly as a thickener, film former, and texture builder. It is on the label of 38 products in our library. Checked against our library November 6, 2026.

The catch: none for most people; check the full product list if your skin reacts easily.

What Cellulose does

Thickens and gives body to formulas
Helps form a flexible film on lashes or skin
Adds bulk and a smooth, soft feel

Cellulose is the fiber that gives plants their structure. For cosmetic use, it is usually taken from wood pulp or cotton, then cleaned and processed into a fine powder or fibers. Formulators like it because it is stable and does not easily react with other ingredients, and it stays steady across a wide range of formulas.

In mascara, fine cellulose fibers help build up lashes and add a soft, even coat. In cleansers and moisturizers, it adds body and a smooth, velvety feel without a greasy finish. It works quietly in the background, so you may not notice it, but it often helps a product feel more pleasant to use.

Good for

Generally suits most skin types, and it is common in mascara, cleansers, and moisturizers for people who like plant-based textures.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is cellulose safe to use on skin?

Cellulose is generally well tolerated and is not known to irritate most skin. Any ingredient can cause a reaction in a sensitive person, so patch test new products first if your skin reacts easily.

Is cellulose vegan?

Generally, yes. Cellulose comes from plants, so it is generally considered suitable for vegan routines. Check the full label, since other ingredients in the product may come from animal sources.