What is prewash and why is it important?

Prewash is the first step in washing your car. It removes loose dirt and reduces the risk of scratching the paint during hand washing.

Can prewash replace hand washing?

No. Prewash removes most loose dirt, but a contact wash is still needed for a completely clean surface.

What is the difference between prewash and iron remover?

Prewash removes general dirt and traffic film, while iron remover is designed specifically to dissolve embedded iron particles and brake dust.

How long should prewash sit on the car?

Usually a few minutes. Do not let the product dry on the surface, especially in warm weather.

Can I use prewash in winter?

Yes. Prewash is especially important in winter to remove salt and road grime before contact washing.

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Car wash & care

Car Prewash

Car prewash – the most important step in washing

Prewash removes loose dirt, road grime and traffic film before contact washing, reducing the risk of scratches. At Lumise, you’ll find effective prewash products from brands like WSH and Cartec. WSH products are developed in Sweden and designed for Nordic conditions, offering strong cleaning performance with a pleasant scent compared to many traditional prewash chemicals.