Pre-exposure prophylaxis (or PrEP) is when people at very high risk for HIV take HIV medicines daily to lower their chances of getting infected. PrEP can stop HIV from taking hold and spreading throughout your body.
In the dry plaster or fresco secco technique, pigments are usually mixed with water, although other substances might also be used. The paint is then applied to a dry plaster wall which has been wetted down with water. Since the plaster is relatively dry, it is non-absorbent, and the pigment adheres to the surface of the plaster. This technique differs from true fresco (described below) in several ways. The colors tend to flake off the surface of the plaster.
Fix damaged areas of the walls with a patching compound recommended for use on plaster and apply an oil-based or shellac primer to seal out moisture. Follow with a top-quality latex paint to give your old plaster a new look. Latex primer can be used but alkyd primers are recommended for best results on plaster. 2  Use trisodium phosphate (TSP) to clean heavily soiled walls. 3  Use a paint pole to extend the reach of the roller.