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.
The art of painting on fresh, moist plaster with pigments dissolved in water. 2. A painting executed in this way. tr.v., -coed, -coÂ·ing, -coes. To paint in fresco.[Italian, fresh (plaster), of Germanic origin.] fres'coÂ·er or fres'coÂ·ist n. Fresco (Italian: Affresco) - Type of mural painting on plaster used throughout the world since early times, but especially known from its high development in Italy during the Renaissance; hence the use of Italian terms to describe the technique. See also Buon fresco, Lime painting and Secco.