Which two characteristics primarily define hair type?

The primary characteristics that define hair type are wave patterns and hair texture. Wave patterns refer to the natural curl or straightness of the hair, categorized as straight, wavy, curly, or coily. This characteristic gives insight into how the hair behaves and responds to styling techniques.

Hair texture pertains to the individual strands of hair, which can range from fine to coarse. This affects how the hair feels and looks, influencing the overall appearance and manageability. Together, these two factors—wave patterns and hair texture—provide essential information for stylists about how to cut, style, and treat the hair effectively, ensuring the best outcomes for various hairstyles and client preferences.

The other options lack the completeness needed to define hair type effectively. For instance, while hair color is an important attribute, it does not determine characteristics such as styling options or the hair's physical properties. Similarly, hair length is more about the current state of the hair rather than a defining characteristic affecting the hair's core type.