Sonax Gloss Shampoo Review

Sonax Gloss Shampoo Review: Gloss Shampoo is just one of the shampoos offered by the German car cleaning company. At a glance this product screams reliability and precision, with a label that features a glossy BMW and the colours of the German flag. In this review we take a deep dive into what this pure shampoo from Sonax has to offer. 

We liked this product so much, we featured it in our Best Shampoo 2020 article!


  • Effective cleaner
  • Great for maintaining existing protection
  • Good foaming ability
  • Leaves a glossy finish, re energising existing protection
  • No streaking or residue left behind
  • pH neutral & phosphate-free


  • Fairly boring smell
  • Not very slick (low/medium lubricity)

Buy on Amazon: Sonax High Gloss Shampoo 

In-depth Review

First Impressions

In my opinion, Sonax bottles and sprayers have never been much to look at. Where some car cleaning brands almost become fashionable with stylish labels and flashy bottles, Sonax seem to have maintained a more traditional style which emits reliability and precision. The labelling itself is split 50/50 between English and German, and provides lots of information about the product.

The smell of Sonax Gloss Shampoo isn’t that exciting either. Neat from the bottle, the smell resembles floor cleaner – with hints of lemon and pine. It’s not overpowering or unpleasant and it becomes unnoticeable once diluted in water.

Using Sonax Gloss Shampoo

Sonax recommends a dilution ratio of 2 capfuls per 10 litres of water. We found that this dilution ratio offers plenty of soap per water. A lot of larger detailing buckets have a 15-20 litre capacity. We found that 2 capfuls cope well up to 15 litres. After this you’ll probably want to add another capful to even things up.

Sonax Gloss Shampoo has a fairly runny consistency, and is by no means gloopy. This makes pouring and measuring much easier. Just don’t knock it over or you’ll be half a tub down in a few seconds.

Where this product comes into its own is it’s cleaning ability. The product looks precise and reliable and it definitely performs that way. Sonax Gloss Shampoo has plenty of bite to handle fortnightly build ups of grease and road grime, whilst being gentle on existing protection. It’s a shampoo that we would trust to maintain a waxed/sealed vehicle.

Sonax Gloss Shampoo also has an impressive foaming ability. By using the recommended dilution ratios, with a blast of water into the bucket, a thick foam is produced. The foam clings well to the paint work and the wash mitt, giving you plenty of confidence in the shampoo. The foam lasts well in the bucket, ensuring you’re topped up with suds on those longer details.

An area where the shampoo lacked was its slickness. When washing the vehicle, it didn’t feel like there was a huge deal of lubrication between the car and wash mitt. This was surprising considering the foam it produces, but unfortunately the slickness just wasn’t as high as other shampoos. 


With the name ‘Sonax Gloss Shampoo’ you’d expect the finish to be glossy. The shampoo did live up to its name, leaving a glossy finish on the paintwork. Whilst it wasn’t eye popping, the gloss level was there – along with some light hydrophobicity too. As a shampoo which doesn’t appear to have lots of fillers and gloss enhancers, we were impressed with the overall finish!

We found that Sonax Gloss Shampoo left no streaks or residue on the car. Throughout the wash it didn’t feel like a particularly heavy or soapy shampoo so we weren’t surprised at these results. A shampoo like this is perfect for darker coloured cars where residue or streaks can ruin the finish of the paintwork.

Additional Thoughts

By following  the recommended dilution ratio, a single 1L bottle of Sonax Gloss Shampoo can potentially yield 200L of shampoo water. For what is already a very reasonably priced shampoo, this yield offers fantastic value! 

Sonax Gloss Shampoo Verdict

Sonax Gloss Shampoo is a great maintenance shampoo, and is one that we would trust to safely maintain waxed/sealed paintwork. The cleaning ability and high foaming properties are impressive and are evidence that this is a good quality shampoo – at a great price! 

Even though the product is slightly boring and lacks the lubricity desired by a lot of car detailers, this is still a safe and reliable choice of shampoo, and is highly recommended by Clean Car Talk.

Buy on Amazon: Sonax High Gloss Shampoo