Yum Cars Yum Foam | Pre-Wash Snow Foam
Yum Foam is Yum Cars' contactless pre-wash — a snow foam built to cling, soften and carry away road film before a mitt ever touches the paint. Yum deliberately dialled back the lubricating agents you'd find in a shampoo to make room for more cleaning power, which is exactly what a pre-wash should do.
The chemistry
We read the Safety Data Sheet before we list anything. Yum Foam is a high-active surfactant blend — anionic surfactants for lift, with amphoteric and non-ionic co-surfactants that build the dense, stable foam and help it hang on vertical panels. A small amount of chelating agent helps it work in harder water. Yum Cars rate it at pH 7 and state it will not compromise waxes, sealants or ceramic coatings.
Use it for
The pre-wash stage of every maintenance wash. Yum Cars state it is safe on painted, vinyl and glass surfaces, plus engine bays, tyres, trims and alloy wheels. It emulsifies dirt and grime and does not reactivate during rinsing.
Dilution guide
How much Yum Foam to use, written the way you actually mix it: millilitres of product, then water to the 1 litre line of the cannon bottle. Ratios read the simple way — 1:10 means 100ml to the litre.
| Foam cannon — normal weekly dirt | 100ml, water to 1 litre (1:10) |
| Foam cannon — heavily soiled car | 150ml, water to 1 litre (about 1:7) |
Most foam cannon bottles hold 1 litre, so that is 100–150ml of Yum Foam with the rest water. The dirtier the car, the more you use. These are Yum Cars' own recommended quantities.
How to use
Rinse the car first. For heavier grime, spray the lower panels with Yum Citrus before foaming. Add 100–150ml of Yum Foam to your foam cannon bottle and top up with water. Foam the whole car, leave it to dwell for 5–10 minutes without letting it dry, then rinse from the top down. Follow with a contact wash using Yum Wash.
Work in the shade on cool panels.
Common questions
What is the difference between snow foam and car shampoo?
Snow foam is a touchless pre-wash: it clings, softens and carries away loose dirt before a mitt touches the paint. Shampoo is built for lubrication during the contact wash. Use Yum Foam first, then Yum Wash.
Is Yum Foam safe on ceramic coatings and wax?
Yum Cars state it will not compromise waxes, sealants or ceramic coatings.
How much snow foam do I put in the cannon?
100 to 150ml, topped up with water to the litre line — 100ml for a normal wash, 150ml when the car is heavily soiled. Let it dwell 5 to 10 minutes without drying, then rinse top down.
Good to know
Available in 500ml and 5 litre. The concentrate is a skin and eye irritant — wear gloves when decanting and keep it out of reach of children.
See the full Yum Cars range laid out in wash order.
Genuine Yum Cars, supplied through the Australian distributor · Alpha Details Melbourne
// Build your 3-pH wash
Complete the 3-pH wash — mix any brand
Alkaline lifts organic grime, acid dissolves minerals, neutral foams and washes without stripping your protection. Pick a product for each step from whichever brand you like — the neutral foam is optional.
▶ Acid or alkaline? Watch which contaminants each one removes
