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 both as a classic car shampoo and as an active foam. It is also suitable for ceramic-coated vehicles, where it can remove the mineral film masking the original properties of the protection and help restore its pronounced 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.

Restore the effect your ceramic lost over time
When water stops draining quickly from ceramic-coated paint, it doesn't necessarily mean the protection is gone. It is often just covered by mineral deposits and road grime.
The acidic formula of Bad Boys Acid Shampoo & Foam helps dissolve these layers and uncover the original hydrophobic properties of the ceramic coating. The paint rinses off more easily after washing, and water is less likely to cling to the surface.

Also ideal before applying new protection
The shampoo does not contain polishing agents or ingredients that would create an artificial finish on the paint. This leaves the surface clean and ready for the next detailing step.
It is therefore suitable not only for ceramic maintenance but also before applying a wax, sealant, or a new ceramic coating. Furthermore, it helps soften 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 for a short time, and never let it dry. Then rinse the car thoroughly and continue with a contact wash or the next detailing step as needed.