How to wash stretch ceilings?

Today, for washing stretch ceilings, entire lines of special tools have been developed. These requirements are:

do not contain abrasive particles;
do not contain solvents;
do not contain substances that can affect the color of the canvas;
do not leave stains.
You can wash the suspended ceiling at home without special tools. In this case, follow the simple rules:

use for washing soft flannel rags, sponges. Do not use brushes, hard fabrics, etc. Remove rings, bracelets - anything that can scratch and damage the surface of the ceiling.
in a bucket or basin, dilute dish detergent or planed pieces of laundry soap in a small concentration. Foam the solution and wash the ceiling with the resulting foam.
with stained spots can not be rubbed. Apply the product and wait until the stain is sodden, so it will be easier to remove.
glossy or mirror ceilings are recommended to be cleaned with means for cleaning mirrors and glasses. Alcohol or ammonia contained in them will allow to wash the surface without streaks.
To ensure the safety of the detergent for your canvas, try it on a section in a corner or on the edge. If spots, stains appear, the color changes, it will not be noticeable.
dust can be removed from the matte surface with a damp flannel cloth, and a glossy ceiling can only be wiped with a dry cloth.
Do not use hot water, only warm.
fabric stretch ceiling can be cleaned with a vacuum cleaner. Turn on the device to the minimum power and slowly run the brush not on the surface, but a few centimeters from it.