Kerassentials vs Kerafen vs ProNail Complex: A Chemist Compared All Three Toenail Fungus Formulas
By Cris Canto| Chemist (MSc) | The Label Truth All three products use the correct delivery format (topical oil) and the same primary antifungal active — Undecylenic Acid, which the FDA recognizes as a Category I (safe and effective) OTC antifungal under 21 CFR 333.210. The formulas are more similar than the marketing suggests. What […]
Undecylenic Acid for Toenail Fungus: What the Science Says and Why Delivery Format Matters
By Cris Canto | Chemist (MSc) | The Label Truth — Last Updated: June 2026 Toenail fungus — clinically called onychomycosis — affects an estimated 10% of the general population and up to 30% of people over 60. The supplement market is full of products claiming to address it with natural compounds. Most are either […]