HG masonry rash remover

Masonry rash, also known as salpeter bleeding, is easily removable with HG masonry rash remover.

Depending on the degree of pollution, dilute 1 to 4 to 1 to 10 with water. Wipe the wall well beforehand, possibly using a garden hose. Then apply and dilute the diluted solution with a brush. Allow to work in and flush the surface thoroughly with water.