To avoid scratching the scalp, the teeth on wide-toothed combs should have:

The choice of long rounded tips for the teeth on wide-toothed combs is essential for ensuring comfort during hair grooming. Rounded tips help in gliding through the hair without snagging or causing irritation to the scalp. This design minimizes the risk of scratches, making it ideal for detangling wet or dry hair, which is particularly important for maintaining hair health and preventing damage.

In contrast, tips that are short and flat or long and pointed could potentially create sharp edges, increasing the likelihood of discomfort or injury. Missing teeth would compromise the comb's effectiveness in styling and detangling, leading to more hair breakage. Therefore, long rounded tips are specifically designed to provide a balance of effectiveness in managing hair while maintaining a gentle approach on the scalp.