High foaming pH neutral car shampoo

Alchemy Dirty Harry Shampoo 500ml

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£10.99

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Size 500ml

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Alchemy Dirty Harry Shampoo 500ml £10.99
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Dirty Harry is a high foaming pH neutral shampoo.

  • High foaming pH neutral shampoo
  • Removes tough dirt and grime
  • Does not strip wax layers
  • Mixes in a bucket with warm water
  • Concentrated to dilute to your needs
  • One capful per litre of water
  • Use with a wash mitt or microfibre sponge
  • Supplied as a 500ml concentrate
Read the full description

Full Description

Dirty Harry is a high foaming pH neutral shampoo.

This shampoo removes the toughest dirt and grime but doesn’t strip any wax layers.

Not only is it pH neutral and wax friendly, but its concentrated formula means you can dilute to suit your needs.

Use Dirty Harry on a cool surface and out of direct sunlight, rinse off any loose debris before adding one capful of Dirty Harry per litre of water, into a bucket and top with warm water.

Apply to the vehicle surface using either a microfibre sponge or wash mitt, starting at the top and working down.

Rinse the car with clean water and dry using a microfibre drying towel.

More in Car Shampoo and from Alchemy.

Tracked UK delivery, or collect eligible orders from our Ilkeston store.

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Key features

  • pH Neutral
  • High Foaming
  • Wax Friendly
  • Capful Per Litre
  • 500ml Concentrate

The Drivers HQ

Expert Notes

Alchemy Dirty Harry is a high foaming, pH neutral car shampoo supplied as a 500ml concentrate. It is built for the contact wash stage: one capful per litre in a bucket, topped up with warm water, applied with a wash mitt or microfibre sponge from the top down. Alchemy states it removes tough dirt and grime without stripping wax layers, which makes it a sensible maintenance shampoo for cars already protected with wax. Use it on a cool panel out of direct sunlight, after a rinse or pre-wash has taken off loose debris. Pair it with a pre-wash, a two bucket setup, a plush wash mitt and a microfibre drying towel.

Perfect For / Suitable Surfaces

  • Vehicle paintwork
  • Waxed paintwork
  • Two bucket hand washes
  • Wash mitt contact washes
  • Microfibre sponge washes
  • Maintenance washes after a rinse

Caution: Use on a cool panel out of direct sunlight and rinse before the shampoo can dry, as dried solution can leave marks.

Technical Specifications

Product Type
Car Shampoo
Brand
Alchemy
Size
500ml
pH
Neutral
Formula
Concentrated, High Foaming
Dilution
One Capful Per Litre Of Water
Compatibility
Wax Friendly, Does Not Strip Wax Layers
Mixing
In A Bucket, Topped Up With Warm Water
Application Method
Wash Mitt Or Microfibre Sponge, Top Down
Working Conditions
Cool Surface, Out Of Direct Sunlight
Primary Use
Hand Washing Vehicle Paintwork

How To Use

Application

  1. Park out of direct sunlight and make sure the paintwork is cool to the touch.
  2. Rinse the vehicle to remove loose dirt and debris.
  3. Add one capful of Dirty Harry per litre of water to your bucket, then top up with warm water.
  4. Load a wash mitt or microfibre sponge and wash from the top of the vehicle downwards.
  5. Work panel by panel and rinse the mitt regularly in a separate rinse bucket.
  6. Rinse the vehicle with clean water before the shampoo has a chance to dry.

Aftercare

  1. Dry the vehicle with a clean microfibre drying towel.
  2. Rinse the wash mitt, sponge and buckets thoroughly.
  3. Wash microfibre mitts and towels separately from other laundry.
  4. Close the cap tightly and store upright, away from heat and frost.

Top Tip: Use a separate rinse bucket so the grit you take off the car stays out of your shampoo solution.

Performance Benefits

  • Cleans away the toughest dirt and grime
  • Keeps existing wax layers in place
  • Designed for bucket hand washing
  • Works with mitt or sponge
  • Dilutes to suit your needs
  • Gentle formula for maintenance washes

Frequently Asked Questions

How much Dirty Harry should I use?

Alchemy recommends one capful of Dirty Harry per litre of water. Add it to your bucket, then top up with warm water.

Is Dirty Harry pH neutral?

Yes, Alchemy Dirty Harry is a pH neutral shampoo. Alchemy also describes it as a gentle, wax friendly formula.

Will it strip my wax?

No, Alchemy states that Dirty Harry removes tough dirt and grime but does not strip any wax layers.

Does Dirty Harry foam well?

Yes, Dirty Harry is a high foaming shampoo, made to be mixed in a bucket with warm water.

Can I use it in direct sunlight?

No, Alchemy advises using Dirty Harry on a cool surface and out of direct sunlight. Rinse loose debris off the car before you start.

What should I wash and dry with?

Apply Dirty Harry with a microfibre sponge or wash mitt, working from the top down. Rinse with clean water and dry with a microfibre drying towel.

What size is this?

This is the 500ml size of Alchemy Dirty Harry. It is a concentrated shampoo, measured by the capful.

HQ Suggests Tips & Insights

  1. Rinse loose dirt off before the mitt touches the paint.
  2. Measure one capful per litre rather than guessing.
  3. Add the shampoo first, then top up with warm water.
  4. Wash from the roof down, leaving the dirtiest lower panels last.
  5. Use a second bucket to rinse your mitt between panels.
  6. Keep wheels on separate mitts and buckets.
  7. Dry with a clean microfibre drying towel to finish.
  8. Order online with UK-wide delivery or visit our Ilkeston, Derbyshire store.

The Brand

Alchemy

Alchemy Car Care was developed from what the company describes as years of grassroots detailing experience. Rather than building the range around a catalogue of existing products, Alchemy says its formulas were repeatedly developed, tested, adjusted and tested again before release. Testing was carried out across different vehicles, paint types and paint colours, with the aim of producing products that worked in the way the people behind the brand wanted to use them themselves.

That practical approach is still reflected in the range. Products are generally straightforward in purpose, with clear applications rather than unnecessary overlap between multiple versions of the same chemical.

Shop all Alchemy
A Range That Covers the Detailing Process

A Range That Covers the Detailing Process

Alchemy has built a broad car care range covering pre-washing, contact washing, chemical decontamination, paint preparation, polishing, protection, interior cleaning, wheels and tyres. Grime provides the citrus pre-wash stage, Whitewash covers snow foam, Dirty Harry handles contact washing, while Chemical X and Diss-olve tackle iron contamination and tar. Further through the process, One Hit provides single-stage paint correction, with products such as Shell Suit, Duck Tail and Suga Coat covering different methods of adding protection and finishing the vehicle.

The range extends beyond liquids into clay, applicators, microfibres, brushes, buckets and other detailing accessories, allowing Alchemy products to be used through much of a complete exterior and interior detailing process.

Practical Chemistry With Useful Dilution

Practical Chemistry With Useful Dilution

A notable part of Alchemy's cleaning range is its use of concentrated products rather than relying solely on ready-to-use formulas. Grime Citrus Pre-Wash, for example, can be adjusted from around 10:1 for heavier contamination through to 100:1 for lighter cleaning, while also having applications beyond exterior pre-washing. Whitewash Snow Foam and Dirty Harry Shampoo are also sold as concentrated products, allowing the user to alter product strength or quantity according to the level of contamination and the job being carried out.

Alchemy is based in Dewsbury, West Yorkshire, and its range is also distributed to the detailing trade through Linntec. This places it firmly within the UK detailing market, with products covering enthusiast maintenance as well as the larger sizes and concentrated chemicals useful to regular and professional users.

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