Alchemy Dirty Harry Shampoo 500ml

High foaming pH neutral car shampoo

Alchemy Dirty Harry Shampoo 500ml

SKU ALC-DH500 Ask a question

Ask a question

We reply by email, usually the same working day.

Notify Me When Back in Stock

By asking for an alert you also join The Drivers HQ email list for news and offers. You can unsubscribe at any time.

£10.99

In stock

Size 500ml

Earn 11 HQ Rewards points How it works

Order by 2pm for same-day dispatch

Free delivery from £100

Alchemy Dirty Harry Shampoo 500ml Alchemy Dirty Harry Shampoo 500ml £10.99

Recommended with this

Click & Collect: Ilkeston · FreeMost eligible orders are ready within 5 minutes during opening times. Please wait for your collection-ready confirmation before travelling. Click & Collect: Ilkeston Not available for this option. Options that can be collected show it here. How it works

Dirty Harry is Alchemy's high foaming, pH neutral car shampoo. It is made to shift the toughest road dirt and grime without stripping the wax underneath, so it suits a car you have already protected and want to keep that way. The formula is concentrated: Alchemy's dose is one capful per litre of water, and you can vary it to suit how dirty the car is.

  • 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 Alchemy's high foaming, pH neutral car shampoo. It is made to shift the toughest road dirt and grime without stripping the wax underneath, so it suits a car you have already protected and want to keep that way. The formula is concentrated: Alchemy's dose is one capful per litre of water, and you can vary it to suit how dirty the car is.

For the best result, wash in the shade on cool panels, rinse the loose grit off first, and work from the roof down so the dirtiest lower panels come last. A second bucket of clean water for rinsing your mitt helps keep grit off the paint. This is the 500ml bottle; Alchemy also makes Dirty Harry in 5 litres.

How to use

  1. Park out of direct sunlight and let the panels cool.
  2. Rinse off loose dirt and grit.
  3. Add one capful of Dirty Harry per litre of water to a bucket and top up with warm water.
  4. Wash with a microfibre sponge or wash mitt, starting at the top and working down.
  5. Rinse with clean water and dry with a microfibre drying towel.

Key Features

  • High foaming
  • pH neutral
  • Wax friendly: does not strip wax layers
  • Concentrated: one capful per litre
  • 500ml bottle

More in Car Shampoo and from Alchemy.

Royal Mail Tracked 24 from £3.95, free on orders from £100.Delivery details

Delivery and collection

Full Delivery Information

Buying for someone? Gift cards from £30, by email or post.Gift cards

Secure checkout
  • Apple pay
  • Diners club
  • Discover
  • Google pay
  • Klarna
  • Maestro
  • Master
  • Paypal
  • Shopify pay
  • Unionpay
  • Visa

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

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.

From the Advice Centre

Guides for Car Shampoo

Visit the Advice Centre
How to wash an electric car: Stjarnagloss SNÖ snow foam and Bubblor shampoo on The Drivers HQ display plinth How to Wash an Electric Car: Charge Port, Car Washes and Jet WashingHow to wash an electric car at home or in a car wash: the step-by-step routine, how to jet wash around the... How to wash a car with PPF: Sonax Xtreme PPF and Vinyl Cleaner, Stjarnagloss Bubblor and Silke on The Drivers HQ display plinth How to Wash a Car With PPF: Paint Protection Film AftercareHow to wash and look after a car with paint protection film: how long to wait after fitting, the safe wash routine,... How to wash a matte car: AutoBead Pure Shampoo on The Drivers HQ display plinth in front of a matte black Mercedes-Benz C-Class How to Wash Matte Paint and Wraps: Products and TechniqueOur guide to washing matte paint and wraps without unwanted shine. We cover product compatibility, gentle washing, drying and spot cleaning, plus...

The Brand

Alchemy

Alchemy Car Care is a UK car care brand based in Dewsbury, West Yorkshire. It says its products are developed by experienced detailers and tested again and again on different cars, paint types and colours, with the focus on being easy to use and lasting well. Alongside its own washes, waxes, glazes and decontamination products, it supplies microfibres, applicators and brushes, and gives its products memorable names such as Dirty Harry, Chemical X, Suga Coat and Soul Glo 2000.

At The Drivers HQ we stock Alchemy online with UK delivery and in our Ilkeston shop: pre-wash and snow foam, shampoo, wheel and iron cleaners, clay, glazes, waxes and sealants, interior care, Re-Fresh odour bombs and brush sets. Popular choices include the Re-Fresh Odour Bomb in Watermelon, Grime Citrus Pre-Wash and Dirty Harry Shampoo.

Shop all Alchemy
Alchemy Light Matter glaze, Soul Glo 2000 tyre gel, Dirty Harry shampoo and Cosmos glass cleaner on a black display plinth

Alchemy wash, decontamination and protection

Wash. Grime Citrus Pre-Wash dilutes 10:1 (water to Grime) for heavy dirt, 50:1 for medium and 100:1 for light, and can be sprayed or used through a foam lance; Alchemy says it is safe on wax and sealant. Whitewash Snow Foam is pH-neutral, at 5:1 water to foam for heavy cleaning. Dirty Harry is a pH-neutral, wax-friendly shampoo: one capful per litre of water, used on a cool panel out of direct sun. Dry with the Alchemy Dry towel, 90 x 75cm in a twisted loop pile, or wash with the microfibre wash pad.

Wheels and decontamination. Supreme Wheel Cleaner is acid-free: neat for heavy dirt or diluted 1:5 to 1:10 for light, left for one minute, then rinsed. Chemical X is a ready-to-use, pH-neutral gel that turns red as it reacts with iron fallout; apply to cool wheels and rinse within five minutes. Qube Soft Clay (100g) lifts overspray and tar for regular use, with Qube Lube as its pH-balanced lubricant.

Gloss and protection. Dark Matter and Light Matter are glazes matched to dark and light paint, hiding light blemishes by hand or machine. Supanova is a soft wax and oil blend for show gloss, Ceramic Wax is a hybrid paste wax that Alchemy rates at up to 12 months, and Duck Tail is a ceramic wet-coat spray, rated at up to four months. Suga Coat is a hydrophobic quick detailer for between washes.

Shop by type: citrus pre-wash, snow foam, wheel cleaners, glazes and car waxes.

Alchemy interior care, odour bombs and brushes

Alchemy interior care, odour bombs and brushes

Interior and glass. So Clean is an anti-static interior cleaner for plastics that leaves a matte finish and a fresh smell and helps stop new dust settling. Cosmos Glass Cleaner is a fast-evaporating blend of distilled solvents for grease, fingerprints and vape residue, and Alchemy says it is safe on acrylic, Plexiglas and tinted windows. For tyres, Soul Glo 2000 is a silicone oil gel: a few drops per tyre bring back the deep black.

Re-Fresh odour bombs. Each 150ml Re-Fresh can treats bacteria and odours through the whole cabin and the air conditioning, not just masking them: run the blower on high in recirculation, empty the can and leave the car unoccupied during the treatment. Scents: Watermelon, Bubblegum, Cherry Bomb, Linen, New Car and So Cool.

Brushes. The GLO Brush Set pairs a large 24cm and a small 16cm brush with super-soft, metal-free bristles for badges, screens, dashboards, vents and gauges; the handles glow in the dark after charging in daylight (also in green). The MultiBrush Pro has two weighted handles and five twist-on heads, and the boar's hair set gives five sizes for vents, door shuts, badges and wheels.

Shop by type: interior cleaners, odour and smoke eliminators and brush sets.

  • Product AdviceAsk for help choosing compatible products and equipment.
  • Trade MembershipTrade Members get 10% off every product except sale items and gift cards.
  • Shop in StoreBrowse products and speak to the team in Ilkeston.

Best Paired With

Customer Reviews

No reviews yet. Tell other drivers what you think of it.

HQ Rewards members who bought it earn 10 points for an approved review, 20 with a photo or video, whatever the rating. Review policy

    Write a Review

    Your rating

    NOT SURE THIS IS THE RIGHT ONE?

    Ask Before You Buy

    Tell us about the vehicle, surface, equipment or result you are working with. Advice is available before you buy, not only after something has gone wrong.

    Get Product Advice Visit the Ilkeston Store