Microcrystalline Cellulose

Microcrystalline cellulose (MCC) is a refined, insoluble form of cellulose — a natural polymer derived from plant fibres. In skincare, it functions as a multitasking texturiser that absorbs excess moisture, prevents ingredients from separating, and helps control the viscosity (thickness) of formulations.Because it is derived from renewable plant sources and is biodegradable, it is considered an environmentally conscious choice for formulators. It appears in roughly 1.2% of skincare products, typically at low concentrations where its functional benefits are most relevant.

Microcrystalline cellulose works primarily through physical absorption. Its porous structure acts like a microscopic sponge, drawing in excess sebum and moisture from the skin's surface. This can help mattify oily or combination skin without disrupting the skin barrier.In formulations, MCC also functions as a stabiliser and thickener, helping to hold emulsions together and prevent active ingredients from settling. This dual action — both on skin and within the product itself — makes it a practical ingredient for balancing texture and performance.

Microcrystalline cellulose is typically used as a supporting ingredient rather than a star component, so you will find it listed in the ingredients of serums, mattifying moisturisers, and oil-control formulations. There is no need to use it strategically; simply incorporate products containing it into your routine as directed. It pairs well with hydrating ingredients and is unlikely to interfere with other actives.

Microcrystalline cellulose is generally well-tolerated and considered safe for topical use across all skin types. Allergic reactions are rare, though those with sensitivities to plant-derived ingredients should patch-test first.