The technique of using a flat lancet to open pustules or to pierce the skin retrieves hair for which type of hair?

The technique of using a flat lancet to open pustules or to pierce the skin is specifically employed to address ingrown hair. Ingrown hairs occur when hairs grow back into the skin rather than out of the follicle, often leading to irritation and the formation of pustules. By using a flat lancet, a practitioner can carefully create an opening for the hair that is trapped under the skin, allowing it to be exposed for removal. This method is particularly effective as it minimizes trauma to the surrounding skin while facilitating the extraction of the ingrown hair.

Other types of hair, such as curly, thick, or frizzy hair, may require different methods of removal or treatment and are not directly addressed by this particular technique of utilizing a lancet. Therefore, the identification of ingrown hair as the type being retrieved through this method is accurate and reflects a specific condition that necessitates this particular approach.