For decades, undercoating has been a line of defense against road salt, brine, moisture, and corrosion. But until now, most products have only covered up the problem. Introducing Under Gone™ – the most revolutionary advancement in vehicle undercoating since its invention. Designed by corrosion experts and proudly made in the USA, Under Gone™ doesn’t just shield your undercarriage—it chemically corrects existing rust and creates a long-lasting barrier against future damage.
⚠️Note: this is not a paint and will not harden like one
Rust Converting Technology – Powered by a unique corrosion-correcting formula, Under Gone™ reacts with rust at the chemical level to stabilize it into a protective layer.
Salt & Brine Barrier – Stops the #1 cause of corrosion: soluble chlorides from road salts and brine. Once applied, your vehicle is shielded from winter’s harshest conditions.
Advanced Adhesion & Longevity – Formulated with overbased calcium sulfonate, Under Gone™ bonds tightly to metal surfaces and forms a durable, self-healing film. Calcium sulfonate resists wash-off, remains stable under heat and pressure, and provides natural corrosion inhibition. This chemistry not only locks out salt, brine, and moisture but also delivers staying power for long-term protection.
Passivation & Protection – Goes beyond sealing; it passivates the metal to halt corrosion activity while leaving a strong, protective coating.
Virtually Odorless & Easy to Apply – Unlike other messy, smelly coatings, Under Gone™ goes on smooth and sets fast. Application is simple: remove loose rust, rinse with Salts Gone®, then apply Under Gone™.
Whether you’re protecting your daily driver, work truck, SUV, trailer, off-road rig, or classic car, Under Gone™ delivers unmatched defense. Fleet operators, DIY mechanics, and automotive professionals alike trust it to extend the life of their vehicles and keep underbodies looking better for longer.
Choose the size that fits your project:
1 Gallon – Ideal for DIY applications or single-vehicle protection.
5 Gallons – Perfect for multiple vehicles or small shops.
55 Gallon Drum – Professional, high-volume applications. **Please note sale price is delivered to commercial address with loading dock or forklift. Residential delivery, with call ahead service, lift gate etc. will be additional charge that will be calculated post checkout. Please call 832-242-1147 with questions or email info@saltsgone.com**
Developed by a U.S. corrosion-control manufacturer with years of industry expertise.
Safe, effective, and backed by the same commitment to quality as our entire “Gone” family of products.
