Home / Guides

Pre-contact washing

Citrus pre-wash and snow foam.

Everything you take off before a mitt touches the paint is dirt that cannot scratch it. ZEST and FOAM both do that job and they go about it differently, so the choice comes down to the car in front of you and the kit you own.

Which one fits your routine?

ProductWhat it doesWhat to check
ZEST citrus pre-washSoftens road film, traffic grease and insect residues before contact washing.Which surfaces it is for, whether you are spraying or lancing it, and the ratio.
FOAM snow foamA thick blanket through a lance, lifting dirt while nothing touches the paint.Your pressure washer and lance, the dilution, and how fast it dries on the day.

Using them in sequence

If you are running both, finish the ZEST stage and rinse it off before the foam goes on. Each wants its own dwell and its own rinse, and neither wants to dry on the car. Keep them in separate bottles; they are not made to be mixed together.

How dirty the car is decides how much of this you need. A good foam blanket lifts a lot, but it is not a contact wash. It is what makes the contact wash safe.

For the whole sequence, follow the car wash guide. For a grouped set of bottles, compare the detailing kits.

Get the dilution right

Read the method as well as the ratio. What you mix in a lance bottle is not what lands on the paint: the lance pulls that mixture into the pressure washer's own water on the way through, and how much it pulls depends on your equipment.

Use the dilution calculator for whatever you are actually filling. It works out the mix from the instructions on the bottle; what your pressure washer does with it afterwards is covered in the snow foam setup guide.

Before spraying

  • Cool panels, out of the sun. Anything that dries on the car is harder to get off than what you started with.
  • Mix it at the ratio on the bottle, and rinse it off while it is still wet.
  • Read the handling information and wear what the bottle asks for.
  • If you cannot identify a finish, a wrap or a respray, find out what it wants before you spray anything at it.

All detailing guides · Shop all products · Safety information