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.
Plaster and lath refers to an older style of interior wall that uses wooden lath attached directly to the studs; the lath is then embedded with plaster. The plaster dries to form a hard, smooth surface suitable for finishing with paint or wallpaper. Plaster and lath is rarely used now, except to repair existing plaster and lath walls.