Antioxidant

Avenanthramides

INCI: AVENANTHRAMIDES

Reviewed by Kate · Last updated 14 Aug 2026

A plant-derived antioxidant from oats that supports skin barrier function and reduces irritation

Best For Skin Types

All, Sensitive, Dry

Addresses

Sensitivity, Redness, Barrier repair, Dryness

Usage Frequency

Daily

What Is Avenanthramides?

Avenanthramides are phenolic compounds unique to oats (Avena sativa). They belong to a class of molecules called phenolic amides and are found naturally in oat grain, where they contribute to the plant's own defence mechanisms. When extracted and incorporated into skincare formulations, avenanthramides function as antioxidants and skin-conditioning agents.

These compounds are typically derived from oat flour, oil, or extract. Their primary role in skincare is to help protect skin cells from oxidative stress whilst supporting the skin's natural barrier function.

Benefits for Your Skin

How It Works

Avenanthramides work primarily through their antioxidant activity, meaning they can donate electrons to free radicals and prevent them from damaging skin cells. This helps protect against environmental stressors and may slow visible signs of ageing.

Research suggests these compounds also stimulate keratinocytes (skin cells) to produce more tight junction proteins—structural components that hold cells together. A stronger barrier is less permeable, which reduces water loss and helps skin feel less reactive. This mechanism appears particularly relevant for those with sensitive or compromised skin barriers.

Clinical Evidence & References

A clinical study of 60 adults with sensitive skin and mild to moderate psoriasis found that a topical lotion containing oat flour, oil, and extract (including avenanthramides) improved skin condition. Similar oat-based preparations have shown effectiveness for atopic dermatitis and itching, though direct evidence specific to avenanthramides as an isolated ingredient remains limited.

Laboratory studies on a synthetic avenanthramide (dihydroavenanthramide D) demonstrated enhanced keratinocyte proliferation and increased tight junction protein expression. However, translating these in vitro findings to real-world efficacy requires further research. The evidence supports avenanthramides as a beneficial ingredient for barrier support, but larger clinical trials would strengthen current understanding.

How to Use

Avenanthramides are most commonly encountered in oat-based moisturisers, serums, and masks rather than as a standalone ingredient. They work well in combination with other hydrating or soothing ingredients. Apply products containing avenanthramides to clean skin, morning and evening, or as directed on the product label. They are suitable for layering with other skincare steps and do not require special handling.

Safety & Precautions

Avenanthramides are generally well-tolerated and derived from a gentle, naturally-sourced ingredient. Oat-based products have a long history of safe use in skincare, including for sensitive and reactive skin conditions.

Frequently Asked Questions

From the Clinic

Not sure what your skin actually needs?

Two minutes, a few questions, and we’ll point you at what matters — no guesswork.

Take the skin quiz

Learn More About Skincare Ingredients

Explore our comprehensive ingredient glossary to understand what's in your products.

Browse All Ingredients

Authorised Stockist

Official UK retailer

Tracked Delivery

Free UK shipping over £50

5 Star Rating

Trusted by thousands

Expert Advice

Free consultations