Regular haircut
By the first century AD, Roman hairstyles were imitated by non-Roman subjects who admired the civilisation that Rome brought.
Examples include the Gallo-Romans and Romanized Jews like Saint Paul seeking to distinguish themselves from traditionalists for whom hair cutting was forbidden.
The regular haircut, worn with a long beard, made a comeback during the Renaissance due to European men's newfound fascination with rediscovered classical Greco-Roman artefacts.
During the Gay Nineties, the regular haircut gradually replaced the longer hair and muttonchop sideburns fashionable since the 1840s until, by 1910, it had become the norm for professional men.
An extreme version known as the undercut was very common for German soldiers during World War II.
[8] During the post-World War II period, the business-man haircut, in the form of a combover, became the standard dress code for men's hair in white-collar workplace settings throughout the Western world until the late 1960s and early 1970s.
In 2010s fashion, the short back and sides continued to be worn by many professional men, while the related undercut[9] was appropriated by the hipster subculture.
[1]: 113–115 [2]: 97 The edge of hair growth at the nape of the neck is tapered to the skin with a fine(zero) clipper blade.
[1]: 128, 131 [2]: 89–90, 135–136 Other names for this style of taper include full crown, tight cut, and fade.
The clipper is gradually arced out of the hair at the hat band to achieve a taper.
[17][18] A crew cut where the hair on the top of the head is graduated in length from the front hairline to a chosen point on the mid to back part of the crown as a flat plane, of level, upward sloping or downward sloping inclination is known as a flat top crew cut or flattop.
A fine clipper blade is used at the sideburns and at the nape arcing out of the hair to create a blend at a point between the bottom and the top of the ears.
A fine clipper blade tapers the lower edge of the hairline at the nape to the skin.
[1]: 130 [2]: 99 The lower edge of hair growth at the nape can alternatively be blocked off in a squared or rounded pattern.
[1]: 118–119, 121 [2]: 68–69 A common style with a regular haircut, medium pompadour or ivy league and also worn with a crew cut or flattop.
[1]: 131, 145–146 [2]: 99–101 A coarse clipper blade is used in the nape, immediately arcing out of the hair, with the taper completed below the bottom of the ears.
A fine clipper blade may be used to taper the lower edge of the hairline to the skin.
Depending on the area of the scalp and the desired appearance of the cut hair, the angle will range from around 45 to 135 degrees.
[2]: 72 [1]: 119 In the shear lifting method, the process is not continuous but carried out sectionally from left to right across the top of the head proceeding from the crown to the front.
[2]: 84–85 [1]: 110 Whorls, cowlicks, and irregularities of the scalp can be addressed by shear point tapering techniques.
Blades are available that leave from 1⁄250 inch (0.10 mm) to 3⁄4 inch (19 mm) of hair on the scalp when the clipper is guided over the head with the teeth of the clipper blade in contact with the scalp.
A #1 guard leaves 1⁄8 inch (3.2 mm), one week's growth of hair, on the scalp; a #2 guard leaves 2⁄8 inch (6.4 mm), two weeks' hair growth, on the scalp; a #3 guard leaves 3⁄8 inch (9.5 mm), three weeks' hair growth on the scalp; and so on.
