Arm hair growth and appearance varies from person to person. Those with dark hair can find it to be a nuisance, while some simply prefer a smoother look. Long arm hair can create the illusion of excess hair. While shaving or waxing often create the need for more maintenance over time, trimming is a good option for men wishing to instantly tone down the appearance of arm hair.
Comb the hair. Use a fine-toothed comb to comb the hair in the direction of growth. This will allow for a uniform cut. Facial hair grooming combs or teasing combs are suitable, and are widely available at supermarkets and drugstores.
Separate a section of hair. Use the fine-toothed comb to pick up a section of hair from the root and hold it up. Move the comb up to the length of hair you wish to keep. Leave the section that needs to be trimmed resting through the top of the comb.
Trim the hair using scissors. Cut the hair that is visible through the top of the comb in a straight line. Use regular scissors or a small set intended for nails or brow grooming. Repeat until all hair has been trimmed to the desired length.