Using the stencil technique and a waterproof spray, two artists created sidewalk designs that can only be seen on rainy days.
NeverWet is a spray already well known for creating a barrier that repels liquids. It can be used on almost any surface, but most commonly is applied to coatings and clothing. And he was the spray of choice for these street paintings - or rather sidewalk.
The process is quite simple: first you need to position the stencil frame on a lightly colored concrete. The next step is to apply NeverWet to the frame, always following the manufacturer's instructions. Finally, simply remove the frame and pour water on the drawn surface.
The video below is very curious and shows how the whole thing was done: