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Why brushes are the reason your black car looks grey
Why brushes are the reason your black car looks grey

In this article
Why dark paint goes grey
What actually removes dirt
How we do it on a driveway
If the damage is already there
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The safest wash starts before contact. Good foam softens and lifts the film sitting on paint, so less pressure and fewer passes are needed later.
Road grime is not all the same. The right pre-wash is chosen for the type of buildup, then given enough time to do its work before rinsing.
Let chemistry do the early work
A measured pre-wash is applied to the areas carrying the most grime, then given time to dwell. The first rinse takes away the loosened dirt before a wash mitt ever touches the panel.
The less dirt left on the paint before contact, the lower the risk of adding marks during the wash.
A safer pre-wash
Assess where road film has collected
Apply the right foam at the right strength
Allow enough dwell time without drying
Rinse thoroughly before contact washing
That sequence is kinder to paint, quicker to rinse and especially useful on vehicles that spend long days on wet or dusty roads.
Why it matters
Pre-wash may be the least visible stage of a detail, but it is one of the biggest reasons the finished paint stays clear.

Sami Okoiro
Kit and water systems · at Washio since 2020
Sam’s wash process is built around safer contact and better results.

Ready when you are?
Type a postcode and we will show the slots we can still fill today.
Try Washio once. Cancel anytime.
Fixed price agreed before we arrive
Free re-rinse if it rains in 48 hours
Photo report after every wash

Ready when you are?
Type a postcode and we will show the slots we can still fill today.
Try Washio once. Cancel anytime.
Fixed price agreed before we arrive
Free re-rinse if it rains in 48 hours
Photo report after every wash

Ready when you are?
Type a postcode and we will show the slots we can still fill today.
Try Washio once. Cancel anytime.
Fixed price agreed before we arrive
Free re-rinse if it rains in 48 hours
Photo report after every wash


