Can Shampoo Be Used to Wash a Car?

2 Answers
DiFrank
07/25/25 7:02am
Shampoo can be used to wash a car because it is weakly acidic and causes minimal damage to the vehicle. You can dilute shampoo with water to create a solution that produces rich foam and contains a high level of active agents. Here are some precautions to keep in mind when washing a car: Avoid Using Random Detergents: Do not use laundry detergent, stain remover, or low-quality soap when washing your car. These cleaning agents contain alkali, which can strip the oils from the paint and accelerate paint aging. Therefore, it is generally recommended not to add any detergents when washing a car. Avoid Using High-Pressure Water Streams to Wash the Body: Excessive water pressure can damage the car's paint. If there is stubborn dirt or mud on the body, first soak it with water before rinsing. Use a dispersed water stream for spraying. Avoid Using Water Other Than Soft Water: This includes hot water, alkaline water, and hard water, as these substances can damage the paint. Washing with hard water may leave marks and a film on the car's surface after drying.
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DawsonMarie
08/10/25 6:23pm
As a car enthusiast who loves cars like my own life, I'm often asked if shampoo can be used to wash cars. My answer is a firm no. Shampoo is designed to deal with dirt on hair, and the silicone oils and conditioners it contains can leave stubborn residues on car paint. Over time, this can cause the car to lose its shine or develop scratches. Professional car wash detergents, on the other hand, are specifically developed for cars. They offer strong cleaning power while protecting the wax layer and won't erode the surface. I've seen many people try shampoo to save money, only to end up spending more on polishing and repairing the paint, which is not worth it. Car paint is much more fragile than we imagine, easily oxidizing or rusting under wind and sun exposure. Using the wrong products accelerates aging. I recommend investing in a good car wash detergent that rinses off cleanly with water, keeping the car shiny while saving money and hassle.
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