Emulsifier

C12-20 Alkyl Glucoside

INCI: C12-20 ALKYL GLUCOSIDE

Reviewed by Daisy · Last updated 2 Jun 2026

A plant-derived surfactant that cleanses and stabilises formulations

Best For Skin Types

All, Sensitive, Combination

Addresses

Sensitivity, Barrier repair

Usage Frequency

Daily

What Is C12-20 Alkyl Glucoside?

C12-20 Alkyl Glucoside is a mild surfactant derived from natural sources—typically glucose and fatty alcohols from plant oils. It belongs to the glucoside family of cleansing agents, which are gentler alternatives to conventional sulphate-based surfactants.

In skincare formulations, it primarily functions as a cleansing agent and emulsifier, helping to remove oil and impurities from the skin whilst also stabilising mixtures of water and oil-based ingredients. It appears in roughly 0.7% of skincare products, most commonly in cleansers and micellar waters.

How It Works

As a surfactant, C12-20 Alkyl Glucoside has a molecular structure with both water-loving and oil-loving ends. This allows it to surround oil droplets and dirt particles, suspending them in water so they can be rinsed away. It does this whilst maintaining a relatively neutral interaction with the skin, reducing the risk of over-drying.

When used as an emulsifier, it stabilises the boundary between oil and water phases in a formula, preventing separation and ensuring a consistent texture and performance.

Clinical Evidence & References

C12-20 Alkyl Glucoside is widely considered a mild, non-ionic surfactant and is recognised in cosmetic science as a safer alternative to sulphate-based cleansers. However, published clinical studies specifically examining this ingredient in skincare products remain limited. Most evidence comes from cosmetic chemistry research and dermatological safety assessments rather than controlled trials on human skin.

Its safety profile is generally supported by its use across major skincare brands and regulatory approval in regions including the EU and UK. If you have very sensitive or reactive skin, it remains gentler than many conventional surfactants, though individual tolerance can vary.

How to Use

C12-20 Alkyl Glucoside is typically used in rinse-off products such as cleansers and micellar waters, where it is diluted and washed away. It is not usually a leave-on ingredient. When using a cleanser containing this ingredient, apply to damp skin, massage gently, and rinse thoroughly with water. No special timing or frequency adjustment is needed beyond normal cleansing habits.

Safety & Precautions

C12-20 Alkyl Glucoside is generally well-tolerated and considered a mild, skin-safe surfactant. It is unlikely to cause irritation for most people, though those with very reactive or fragile skin barriers may wish to patch test first.

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