Ingredient Science

Undecylenic Acid and Nail Care

By PureNail Pro Research Team · Reviewed by Dr. Angela Ferris, M.D. · Updated June 2026

Undecylenic Acid is a recognized topical ingredient found in various over-the-counter nail and skin products — and it's included in PureNail Pro. Here's an overview.

What Is Undecylenic Acid?

Undecylenic Acid is a naturally-derived fatty acid used topically in a variety of over-the-counter nail and skin care products.

A Common OTC Ingredient

This ingredient appears in numerous topical products available without a prescription.

Part of a Broader Formula

In PureNail Pro, Undecylenic Acid is one of sixteen ingredients that make up the full topical formula.

Undecylenic Acid in PureNail Pro

See the full ingredients page and the current PureNail Pro discount on the PureNail Pro official website.

PureNail Pro is not intended to diagnose, treat, cure, or prevent nail fungus (onychomycosis) or any diagnosed condition. Consult your doctor if you have concerns about a nail or skin condition.

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