When water stops beading off the paint, it's time to remove the minerals
RRC Bad Boys Acid Shampoo & Foam is an acidic car shampoo with a pH of 3.7 that helps remove mineral deposits, hard water spots, limescale, and other impurities that a standard pH-neutral shampoo often cannot handle.
You can use it as both a classic car shampoo and an active foam. It is also suitable for ceramic-coated vehicles, where it can remove the mineral film covering the original properties of the protection and help restore its distinct hydrophobic effect.
RRC BAD BOYS ACID SHAMPOO & FOAM AT A GLANCE
- Dissolves mineral deposits and hard water spots.
- Helps restore the hydrophobicity of ceramic coatings.
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Shampoo and active foam in one depending on the chosen dilution.

Give your ceramic coating back the effect that faded over time
When water stops running off ceramic-protected paint quickly, it doesn't necessarily mean the protection is gone. Often, it is just covered by mineral deposits and road grime.
The acidic formula of Bad Boys Acid Shampoo & Foam helps to dissolve these layers and reveal the original hydrophobic properties of the ceramic coating. After washing, the paint rinses more easily and water clings less to the surface.

Ideal even before applying new protection
The shampoo does not contain polishes or ingredients that would create an artificial finish on the paint. The surface thus remains clean and ready for the next detailing step.
It is therefore suitable not only for ceramic maintenance but also before applying wax, sealant, or a new ceramic coating. Additionally, it helps to soften the water during washing, which makes rinsing easier and reduces the risk of new mineral spots forming.

Instructions for use
Active foam:
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heavy soiling: 1:4
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regular maintenance: 1:10
Hand wash:
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approximately 50 ml per 10 liters of water
Apply the product to a cool surface out of direct sunlight, let it work briefly, and never let it dry. Then rinse the car thoroughly and continue with a contact wash or the next detailing step as needed.