Final answer:
Waterproof or water-resistant capes are used for shampooing and other hair services to protect clients from water and chemicals.
Step-by-step explanation:
The type of cape used for shampooing, wet hair cutting, wet styling, or chemical services is typically a waterproof or water-resistant cape. These capes are designed to protect the client's clothing and skin from getting wet or being affected by chemical products. When performing services such as shampooing, it is important to use a cape that prevents the water and products from seeping through. This ensures a comfortable and mess-free experience for the client. In the context of chemical services, such as applying perms or coloring, these capes also serve to protect the client from potential spills or splashes of the chemical solutions used during the process.