Gtechniq Auto W4 Snow Foam Car Shampoo and Degreaser For Cars, 100% Biodegradable Non-Caustic Pre-Wash Snow Foam Car Wash, 1L

I really like this car shampoo. A little goes a long way and I love the fact that it doesn’t leave any streakiness on the car. It rinses off really well. Cleaning power is great and it doesn’t appear to strip any of the existing protection already on the paintwork. It’s now my go-to shampoo.

WOW this is very foaming and a nice smell great product 👌

I've used a lot of different snow foams over the years, and this is one of the fairly good ones.I only say "fairly good", because to be honest, I've never found one which particularly astounding. Most don't produce a really thick, clinging foam without using a fair bit more than the advised amount.This Gtechniq W4 is a bit thicker, so likely a bit more concentrated than others, so you do need to use less than other brands, but it does cost a bit more (1l of this might be 2.5l of another brand, but you'll use 2.5+ times as much with some other brands).Gtechniq W4 does a good job of softening baked on insects, mud, grime and bird muck - which is basically what it is for. It isn't a contactless wash, meaning you will still need to do a regular contact wash afterwards (e.g. buckets and a wash mitt), but it does make it that much easier and quicker.The other plus is that it smells pretty nice too!

One of the best snow foams I’ve used. Combined with next day delivery and the same price as direct purchase. This was a win win purchase.

This snow foam does not produce the most luxurious foam, but it does possess a very powerful degreasing agent which most snowfoams don’t. It does produce a deep clean on the car without stripping any coatings, so I'm not intending to use it for every wash but instead will use it 2 or maybe 3 times during the year, such as after the winter months, to get rid of any collected grime, salt etc . Nothing to say you couldn’t use it for every wash but for most maintenance washes I’ll stick to my Bilt Hamber Autofoam. It does provide something “ extra” and it’s very good at what it does.

Used on car interior got off stains on car seat material

I used this as a pre wash in my Karcher pressure washer dispenser. It gives lots of foam which lasts well, and is simply washed off after 5 mins. After a normal wash the paintwork certainly seems to be cleaner and shinier than when washed without using this first. Would definitely recommend.

Decent enough foam but just doest really shift light grime after not doing many miles and fairly dry summer conditions and a bit of rain.I wouldn't buy again as it's not worth the high price tag