Antioxidant

Prunin

INCI: PRUNIN

Reviewed by Daisy · Last updated 14 Aug 2026

A flavonoid antioxidant derived from fruit that helps protect skin from oxidative stress

Best For Skin Types

All

Addresses

Fine lines, Dryness, Hydration

Usage Frequency

Daily

What Is Prunin?

Prunin is a flavonoid compound naturally present in fruit, particularly in citrus and pear varieties. It belongs to a class of plant-derived polyphenols known for their antioxidant properties. In skincare formulations, prunin functions as an antioxidant and skin conditioning agent.

As an antioxidant, prunin works to neutralise free radicals—unstable molecules that can damage skin cells and contribute to premature ageing. It also has humectant properties, meaning it can help skin retain moisture, contributing to a smoother, more hydrated appearance.

Benefits for Your Skin

How It Works

Prunin neutralises free radicals through its chemical structure, which allows it to donate electrons to unstable molecules and render them harmless. This reduces oxidative stress in the skin, which is thought to contribute to visible signs of ageing.

Additionally, prunin's humectant properties allow it to draw water into the outer layers of the skin, helping to maintain hydration and support barrier function. This combination of antioxidant and hydrating properties may contribute to a more resilient, conditioned skin appearance.

Clinical Evidence & References

Research on prunin and related flavonoid compounds suggests potential benefits for skin health. Studies on fruit extracts containing prunin have identified effects on blood fluidity and circulation, which may have downstream benefits for skin appearance and health, though direct skincare studies in humans are limited.

The evidence base for prunin specifically in topical skincare is modest. Much of the available research focuses on fruit extracts containing multiple compounds rather than prunin in isolation. Further clinical studies would help establish optimal concentrations and efficacy in cosmetic formulations.

How to Use

Prunin is typically found in antioxidant serums, moisturisers, and treatment products. It works well in combination with other antioxidants and hydrating ingredients. For best results, use consistently as part of your daily routine. There is no evidence that higher concentrations are more effective, so follow product instructions.

Safety & Precautions

Prunin is generally well-tolerated in skincare products and is derived from food sources. As with any new ingredient, patch test if you have sensitive skin or known sensitivities to plant extracts.

Frequently Asked Questions

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