Find the Right Rust Protection for Your Vehicle
Rust-prevention solutions for every stage of every vehicle.
Answer one question about your vehicle’s rust and we’ll point you to the NHOU® products built for it, then help you buy or book a local applicator.
How Much Rust Does Your Vehicle Have?
Take a look underneath: the frame, wheel wells and brake lines tell you the most. Pick the closest match.
Recommended for new vehicles
Lock in protection before rust starts. BOSS Wax® & Oil is applied once by a pro; V3 or Oil Undercoating work if you prefer to do it yourself.
BOSS Wax® & Oil Two-Stage Rust Prevention
Professionally applied, new vehicles only. Lifetime, transferable warranty.
NHOU® V3 Formula Undercoating
Petroleum, wax and lanolin in one drip-free formula. Available in Clear or Black.
NHOU® Oil Undercoating
Our flagship oil, proven on any vehicle and available in Clear or Black.
Recommended for light rust
Stop light rust before it spreads. Choose semi-permanent, pro-applied Hybrid, our newest V3 formula, or our proven Original Oil.
BOSS Wax® Hybrid
Mil-spec protection for vehicles with light rust, typically up to 2 years old. Professionally applied.
NHOU® V3 Formula Undercoating
Deep penetration, long-lasting grip and natural moisture resistance in one drip-free hybrid.
NHOU® Oil Undercoating
Penetrates light rust, displaces moisture and forms a self-healing barrier.
Recommended for heavy rust
Treat it in two steps: convert the existing rust, then seal it with oil that creeps into every seam.
NHOU® Rustoration® Rust Converter
Turns rust into a zinc-phosphate layer in 30 minutes and preps metal for oil.
NHOU® Oil Undercoating (Black)
Creeps, migrates and prevents future rust, with a clean black finish.
How Do You Want It Applied?
Book a local NHOU® Authorized Applicator, or do it yourself with our DIY products. Not sure which makes sense? Is car undercoating worth it? Costs and options.
Have It Professionally Applied
Hundreds of NHOU® Authorized Applicators can treat your vehicle. BOSS Wax® and Hybrid are available only this way.
At our Chichester shop and participating locations, you also get a RustFax report with photos and technician notes of the work. How RustFax works
Do It Yourself
Get pro-level results at home with a DIY Kit, or keep your protection topped up with Touch-Up Cans.
How NHOU® Protects Your Frame
Rust starts where you can’t see it: inside frame rails, seams and welds. Take a 360° look at a vehicle’s frame, where rust takes hold, and how NHOU® Oil Undercoating reaches it.
- Penetrates seams, cavities and welds, down to the base metal
- Displaces moisture and blocks oxygen to stop rust at the source
- Stays soft and forms a lasting, self-healing barrier
30-second 3D animation. Tap to pause or watch full screen.
Why NHOU®? Your Vehicle Already Knows the Answer
Modern vehicles are built with lightweight metals and complex seams that trap moisture and road salt, prime conditions for rust. NHOU® undercoatings are engineered to penetrate deep into seams, spot welds and folds, blocking out moisture and oxygen to stop corrosion at the source.
Our Mil-Spec formulas are lab-tested and proven in real-world conditions to deliver long-lasting rust protection.
New: NHOU® V3. A rustproofing product so smart, it makes others look like DIY salad dressings.
Why Oil-Based Rustproofing Is the Smart Choice
Unlike paint or traditional undercoatings that trap moisture and rust, NHOU®’s mineral-oil-based formulas penetrate through rust to the base metal. They displace moisture, eliminate oxygen and self-heal, stopping rust at the source.
Designed to reach deep into seams, cavities and welds, they form a lasting barrier against the elements.
Still weighing your options? Compare oil, wax, lanolin and hybrid undercoatings in our beginner’s guide.
Our Customers Speak. Their Vehicles Thank Them.
NHOU® is the only undercoating brand with its own high-volume service shop, treating thousands of vehicles annually. That gives us unmatched insight into real-world performance.
Backed by our in-house lab and expert chemists, we’re constantly evolving our formulas to stay at the cutting edge of rust protection. Don’t just take our word for it. See what our customers are saying.
Protection Against Road Salt Brine
Modern salt brines are far more corrosive than traditional rock salt. These liquid solutions, often containing magnesium and calcium chloride, creep deep into body cavities and aggressively attack your vehicle’s frame. Car washes won’t fully remove them and can even push brine deeper.
NHOU® undercoatings are lab-engineered and road-tested to seal out brine, block oxygen and stop rust before it starts.
Schedule Local Service Now
Book your appointment with one of hundreds of NHOU® Authorized Applicators around the world.