If you're like most people, you probably don't give much thought to the razor you use to shave your neck. But if you find that your neck feels like a cactus after you shave, it's time to take a closer look at your razor. There are a few things that can cause this problem, and by understanding what they are, you can avoid them and keep your neck feeling smooth and comfortable. One of the most common causes of an itchy, irritate neck after shaving is using a dull razor. When the blades on your razor are dull, they can tug at your hair and skin, causing irritation. To avoid this problem, be sure to replace your razor blades regularly. Or, move to a Straight Razor (read before you switch). Another common cause of an itchy neck after shaving is using too much pressure when shaving or using alcohol based after shaves, these will cause itching and when scratching, your are only damaging the skin further.