What is the correct angle for holding a straight razor during a shave?

Holding a straight razor at a 30-degree angle to the skin is optimal for achieving a close and comfortable shave. This angle allows the blade to efficiently slice through hair while minimizing the risk of cuts or irritation to the skin. At 30 degrees, the blade is positioned in a way that provides enough contact to effectively remove hair without being so steep that it can dig into the skin, which could lead to nicks and discomfort.

Using a different angle, such as 15 degrees, may not provide enough cutting edge against the hair, leading to ineffective shaving, while a 45-degree angle might increase the risk of abrasions or cuts. A vertical position straight against the skin would not allow the blade to cut properly and would cause significant discomfort and potential injury. Therefore, the 30-degree angle is the most effective and safe position for holding a straight razor during a shave.