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.
Another form of textured paint has no granules. Thick and smooth, it's applied to the surface and then textured with special tools. Textured paints are available in either flat-finish latex or alkyd formulations. Latex versions are frequently used on bare drywall ceilings because they can be used without a primer and they help to camouflage the seams between sheets of drywall.