When we talk about car washing, we often think of foam, gloves, or the final result. But one essential parameter is too often overlooked: the pH of the products used. Yet this simple indicator plays a key role in the performance, surface safety, and long-term maintenance of your vehicle.
In this article, we explain everything you need to know about pH in detailing products , to help you make the right choices, whether you are an enthusiast or a professional.
What is pH?
pH (potential hydrogen) measures the level of acidity or basicity of a product, on a scale of 0 to 14:
- pH < 7 : acidic product
- pH = 7 : neutral product
- pH > 7 : alkaline (or basic) product
Each level has its own properties... and uses! The mistake is to believe that a single type of pH will work for everything. In reality, each step of detailing may require a different pH .
Why is pH important in detailing?
1. Surface protection
A product that is too acidic or too alkaline and used incorrectly can damage:
- ceramics ,
- raw aluminum rims ,
- exterior plastics ,
- or even the PPF film .
2. Targeted effectiveness
Some contaminants respond better to a certain pH:
- Mineral residues (limestone, road veil): require an acidic pH.
- Fats and oils : are best removed by an alkaline pH.
- For regular maintenance or protected bodywork: a neutral pH is ideal.
The different product families according to their pH
🔵 Acidic products (pH 2 to 5)
Use : mineral decontamination, very dirty rims, limescale film.
Examples :
- Acid rim cleaner
- Acidic ferrous decontaminant
Caution : Use with caution, especially on sensitive surfaces.
⚪ Neutral products (pH 6.5 to 7.5)
Use : regular maintenance, bodywork washing, foam shampoo.
Examples :
- pH neutral shampoos (ideal for preserving waxes and ceramics)
- Quick detailers
Advantage : great compatibility with protections.
🟢 Alkaline products (pH 9 to 13)
Use : degreasing, pre-washing, intensive cleaning.
Examples :
- APC (All Purpose Cleaner)
- Active foam pre-washes
Caution : some alkalis can alter the protections if too concentrated.
How to choose the right pH for your wash?
| Objective | Recommended product | Ideal pH |
|---|---|---|
| Protected body wash | Gentle shampoo | neutral pH |
| Engine or plastic degreasing | APC or intensive cleaner | Alkaline pH |
| Remove limescale or brake film | Acid rim cleaner | acidic pH |
| Washing between two wax applications | Maintenance shampoo | neutral pH |
The case of protections: pay attention to the pH!
Ceramic coatings , waxes , and sealants can be sensitive to harsh products. An incorrect pH can reduce their lifespan or even eliminate them prematurely.
At ProShineAuto , all our products indicate their pH to help you make the right choice, depending on your use and your level of requirement.
Conclusion: choose well to wash well
Understanding pH gives you a more technical and effective view of detailing . It's not just a matter of chemistry: it's a real lever for protecting, optimizing, and enhancing your vehicle.
✅ Remember:
- pH influences the safety and effectiveness of your products.
- Acid = mineral decontamination; Alkaline = degreasing; Neutral = gentle maintenance.
- Always respect the dilutions and the surfaces concerned.
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