Final answer:
The coil comb technique should be performed by placing the comb at the scalp to create defined curls from the roots down, which ensures an even and polished look.
Step-by-step explanation:
The coil comb technique is often used in hairstyling, specifically when working with natural or textured hair to create defined curls. To perform this technique correctly, you should place the comb at the scalp and then wind the hair tightly around the comb as you move it down the hair shaft. This helps to create tension and form tight coils or curls.
It is important not to start at the midshaft, ends, or tips because this will not create the desired tight coil from the roots down, and this will not allow you to effectively control where the coil begins, which is essential for an even and polished look.