During the Stone Age and the ice age, to avoid facial hair from retaining water that would then freeze on the face, it is believed that men would pluck the hairs from their faces using sea shells. About 60,000 years later, it is believed that man started to shave using shards of obsidian or clam shell.
Egyptians were thought to shave their heads in order to stop lice but it was only the superior Egyptians that would shave their heads and early versions of razors and blades have even been found in burial chambers, there to allow the dead to continue shaving their heads. The habit of shaving spread north after Alexander the Great ordered his soldiers to cut off their locks so that their enemies would not be able to grab them during hand to hand combat.
This habit was taken up most seriously by the Romans who even had “tonsors,” an early version of the barber shop which would double up as a meeting place to exchange gossip. During the Middle Ages, shaving was made essential for Catholic priests as it would distinguish them from Muslims and Jews however, as the Church split in 1054, it was only the western catholic priests that shaved as the Eastern orthodox church made its own rules. In 1096 beards were banned for all Christians except for those on a crusade.
Although therefore everybody shaved, it was still considered the job of a barber to do the shaving and that continued until the 18th century when a Frenchman by the name of Jean-Jacques Perret invented a straight razor with a wooden handle which would allow men to shave themselves.
In the early 19th century, these wooden handled blades became the straight razors that we know today, with the wooden handle doubling as a guard for the blade when it was not in use. In 1895 a travelling salesman by the name of King C. Gillette decided that instead of keep having to sharpen the blade, why not just replace it and this led to the introduction of the double edged safety razor which is still in use by many people today.
More recently though the whole razor has been replaceable andmore recently still, razor clubs like https://www.bladebox.co.uk/ have been introduced and these are clubs which will provide shavers with new razors at regular intervals, usually once per month. A razor club has a fee of course but for that fee, a person that shaves regularly can be assured of new razors as often as they require them.
The razors are shipped to their home which is very convenient, saving anyone having to go shopping for razors and seemingly being faced with a multitude of different razors to choose from.
Once someone knows that the razors they receive from their club are satisfactory, they are saved the headache of deciding if one of the new razors would be more effective than the last one they bought, The quality of the razors from these clubs is high and so they are continuously growing in popularity.