4. Hair:
a. shall be taper-trimmed at the back (can be taper-trimmed square back), sides, and above the ears and the shaving of all the hair on the head is permitted;
b. be no more than 15 cm (6 inches) in length and sufficiently short that, when the hair is groomed and head-dress is removed, no hair shall touch the ears or fall below the top of the eyebrows ; and
c. be no more than 4 cm (1-1/2 inches) in bulk at the top of the head, gradually decreasing to blend with the taper-trimmed sides and be kept free from the neck to a distance of 2.5 cm (1 inch) above the shirt collar.
5. Sideburns:
a. shall not extend below a line horizontally bisecting the ear and be squared off in a horizontal line at the bottom edge; and
b. shall be of even width and taper-trimmed to conform with overall hair style.
6. Moustaches :
a. shall be kept neatly trimmed and not extend below the corners of the mouth ;
b. shall not be greater than 2 cm (3/4 inches) in bulk ;
c. shall not protrude beyond the width of the face, when fully extended horizontally and worn in a waxed, handlebar style ; and
d. be modified in such a fashion as to accommodate the type of operational equipment required, should a member's safety be put in jeopardy.
7. Beards :
a. Subject to procedures established by Commanders of Commands, permission to wear a beard shall only be granted to :
(1) all ranks who wear the naval uniform, wherever they are serving ;
(2) all ranks on strength of an infantry pioneer platoon ;
(3) adherents of the Sikh religion ; and
(4) personnel, on the direction of a medical officer, subject to medical reassessment at intervals not to exceed 6 months.
c. Where the wearing of beard is authorized in accordance with the previously mentioned instructions, the following shall apply :
(1) the beard shall be worn with a moustache and kept neatly trimmed, especially at the lower neck and cheekbones ;
(2) the beard shall not exceed 2.5 cm (1 inch) in bulk ; and
(3) when a member's safety is put in jeopardy, facial hair shall be modified in such a fashion as to accommodate the type of operational equipment required to be worn.