Relaxers work by using these powerful chemicals to penetrate the cortex and break the disulfide bonds, thus straightening the hair. Once these bonds have been broken, the process is irreversible and the hair will be straight until it grows out or is cut.air relaxers have come a long way since first being debuted in Garrett Morgan's sewing repair shop. When it comes to straightening hair, there are a ton of options on the market.
What are the different types of nurses? As we mentioned, there are three primary categories of nursing. Each level has its own requirements and responsibilities. For example, non-degree nurses like CNAs and LPNs usually perform health assistant duties and are often needed in home health care and assisted-living settings.
A to Z of hospital departments. There are many hospital departments, staffed by a wide variety of healthcare professionals, with some crossover between departments. There are many hospital departments, staffed by a wide variety of healthcare professionals, with some crossover between departments. For example, physiotherapists often work in different departments and doctors often do the same, working on a general medical ward as well as an intensive or coronary care unit.