What is Safety razor?
[[File:Rasierhobel Niedrigpreissegment.jpg|thumb|A selection of low-cost safety razors]] A '''safety razor''' is a [[Razor|shaving implement]] with a protective device put between the edge of the [[blade]] and the skin. The reason for the protective devices was to make it easier for people to [[shaving|shave]] without getting hurt. This made professional [[barber]]s less needed. The term was first used in a patent issued in 1880.{{sfn|Waits|2014|loc=page 6 of the introduction}} Plastic [[disposable]] razors and razors with replaceable blade attachments are in common use today. [[Razor]]s commonly include one to five cutting edges, which are sharp. == Design == Safety razors first had an edge protected by a [[comb]] patterned on different types of protective guards that had been placed to open-blade [[straight razor]]s during the preceding decades.<ref>{{cite book|last1=Waits|first1=Robert K.|title=A Safety Razor Compendium: The Book|year=2014|pages=96, 260, 323, 67, 81|isbn=9781312293533|url=https://books.google.com/books?id=4oX3BgAAQBAJ&dq=comb&pg=PA143}}</ref> == Lifespan == To maintain the sharpness, razors can be [[stropping (blade)|stropped]] using an old strip of [[denim]].{{citation needed|date=November 2024}} Safety razors are usually made of [[razor steel]]. That is a low chromium [[stainless steel]], and it can be made very sharp. However, it [[corrosion|corrodes]] easily. Drying the blades after using them can make them last longer.<ref>{{cite web|url=http://www.chicagotribune.com/business/yourmoney/chi-ym-spending-1104nov04-story.html|title=Extending life of razor blades leaves users dry|first=GREGORY KARP, a personal finance writer for The Morning Call, a Tribune Co. newspaper in Allentown|last=Pa|date=|website=chicagotribune.com|accessdate=11 April 2018}}</ref> Salt from human skin also can corrode the blades, but washing and carefully drying them can make them last longer.<ref>{{cite news |last1=Tarmy |first1=James |url=https://www.bloomberg.com/news/articles/2014-04-22/science-reveals-the-sec