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.
1 A great way to save time (and your back) when cleaning the walls, is to use a mop. 2  Use the sponge type of mop (get a fresh one for your walls) and use a cleaner that won't leave a film. 3  If your paintbrush is leaving foam bits or paint of a different color on your wall, get a new one. To ensure an even coat, after covering a given area with wet paint (say an 8 foot portion), go back over it in a strictly up-and-down motion, with each stroke covering 50% of the area of the previous stroke. 2  This is known as laying off the paint. 3  For more detail, see How to Use a Paint Roller.