Waxoyl Professional Hardwax for Underbody

Hardwax provides superior corrosion protection all vehicles and metal structures.

Hardwax forms a tough, flexible, wax-based barrier that keeps the elements out while providing unparalleled chemical protection that completely interrupts electrochemical oxidization (corrosion) for all types of metals. From bridges to cars, Hardwax has a rich history of protection in a variety of applications.

The Science Behind Hardwax:

  • Hardwax kills existing surface rust!
  • The unique capillary action of Waxoyl Hardwax displaces moisture to achieve an optimum bond, even in damp environments. Waxoyl adheres equally well to wet or dry metal!
  • A little goes a long way! Optimal protection can be achieved with only .06 to .08 mm dry film thickness, resulting in a coverage area over 55 square feet per liter.
  • Insulates against temperature changes and provides sound-proofing for a quieter ride.
  • Simple to use and efficient, Waxoyl Professional tools make application easy and require no maintenance or cleaning.
  • Temperature range of active protection from -30°F to 302°F.
  • Very resistant to aging. Contains no mineral acids, bases, lead, chromium, or zinc.
  • Safe on all paint finishes. Contains no silicones or fluorocarbons.
  • Read more on our Frequently Asked Questions page.
  • Watch a video on how to apply Waxoyl Hardwax

The Difference Between Hardwax Plus and Hardwax 21:

Hardwax Plus

  • Lighter and better penetrating product that can be used on vehicles with some existing rust.
  • This formulation is easier to spray and cleans up without petroleum solvents.
  • Never dries and requires more frequent touch-ups due to its lighter formula.

Hardwax 21

  • Hard-wearing product that is designed to be applied to relatively new or rust-free vehicles in extreme environments.
  • It has more odor during application and requires petroleum based agents for clean-up.
  • Completely cures to a tack free finish and is longer lasting between touch-ups.


Hardwax 500ML Aerosol

Hardwax Plus 500ML Aerosol

Hardwax forms a tough, flexible, wax-based barrier that keeps the elements out while providing unparalleled chemical protection.

View more
Hardwax 5 Liter

Hardwax Plus 1 Liter

Hardwax forms a tough, flexible, wax-based barrier that keeps the elements out while providing unparalleled chemical protection.

View more
Hardwax 5 Liter

Hardwax Plus 5 Liter

Hardwax forms a tough, flexible, wax-based barrier that keeps the elements out while providing unparalleled chemical protection.

View more
Hardwax 20 Liter

Hardwax Plus 20 Liter

Hardwax forms a tough, flexible, wax-based barrier that keeps the elements out while providing unparalleled chemical protection.

View more
Hardwax 58 Liter

Hardwax Plus 58 Liter

Hardwax forms a tough, flexible, wax-based barrier that keeps the elements out while providing unparalleled chemical protection.

View more
WX-A Gun

WX-A Gun

The WX-A offers great flexibility and quality at an affordable price.


View more
HRS Gun without Wand

HRS-SF Kit

If you are applying high volumes of Hardwax and want a tool that will last, this is it.

View more
HI-Flow Application Gun

HI-Flow Application Gun

Designed for maximum Hardwax output, this high-flow gun gets the job done quickly!

View more
1 Gun Starter Kit

1 Gun Starter Kit

Great flexibility at an affordable price, this includes a high quality gun and all wands required to spray both underbody and cavities.

View more
2 Gun Starter Kit

2 Gun Starter Kit

Same high quality gun as the 1 gun starter kit, but with the added bonus of an additional cavity gun to minimize cleanup during jobs.

View more
2 Gun Starter Kit with 3 Wands

Ultimate 2 Gun Starter Kit

Professional application kit includes everything you need to do the job. Comes with our best underbody and cavity guns and all the wands.

View more
Waxoyl Aerosol DIY Kit For Small Unibody

Waxoyl Plus Aerosol DIY Kit For Small Unibody

Waxoyl DIY aerosol kits contain everything you need to get the job done without specialty tools or an air compressor.

View more
Waxoyl Aerosol DIY Kit For Large Unibody

Waxoyl Plus Aerosol DIY Kit For Large Unibody

Waxoyl DIY aerosol kits contain everything you need to get the job done without specialty tools or an air compressor.

View more
Waxoyl Aerosol DIY Kit For Small Chassis

Waxoyl Plus Aerosol DIY Kit For Small Chassis

Waxoyl DIY aerosol kits contain everything you need to get the job done without specialty tools or an air compressor.

View more
Waxoyl Aerosol DIY Kit For Large Chassis

Waxoyl Plus Aerosol DIY Kit For Large Chassis

Waxoyl DIY aerosol kits contain everything you need to get the job done without specialty tools or an air compressor.

View more
Waxoyl Small DIY Compressor Kit

Waxoyl Plus Small DIY Compressor Kit

These Waxoyl DIY kits contain everything you need to get the job done using your home/shop air compressor.

View more
Waxoyl Medium DIY Compressor Kit

Waxoyl Plus Medium DIY Compressor Kit

These Waxoyl DIY kits contain everything you need to get the job done using your home/shop air compressor.

View more
Waxoyl Large DIY Compressor Kit

Waxoyl Plus Large DIY Compressor Kit

These Waxoyl DIY kits contain everything you need to get the job done using your home/shop air compressor.

View more
Waxoyl Hardwax 21 5 Liter Tin

Waxoyl Hardwax 21 1 Liter Tin

Hardwax 21 provides rugged, long-lasting corrosion protection for newer vehicles operating in harsh environments.

View more
Waxoyl Hardwax 21 5 Liter Tin

Waxoyl Hardwax 21 5 Liter Tin

Hardwax 21 provides rugged, long-lasting corrosion protection for newer vehicles operating in harsh environments.

View more
Waxoyl Hardwax 21 60 Liter Keg

Waxoyl Hardwax 21 60 Liter Keg

Hardwax 21 provides rugged, long-lasting corrosion protection for newer vehicles operating in harsh environments.

View more
Waxoyl Rust Remover

Waxoyl Rust Remover

Use the waxoyl rust remover treatment as part of a complete restoration process that keeps your car on the road for years to come.

View more