Which of the following is a sign of a healthy scalp?

A healthy scalp is characterized by being clean and free of flakes. This indicates that there is a balanced level of moisture and oil, which helps maintain the health of the skin and hair follicles. A clean scalp allows for proper hair growth and reduces the risk of issues such as dandruff, infections, or other conditions that could impede hair health.

In contrast, an oily surface may suggest overproduction of sebum, which can lead to clogged hair follicles and potentially result in scalp issues. Redness or irritation is often a sign of inflammation or an allergic reaction, which is not indicative of good scalp health. Excessive dryness can lead to flaking and irritation, signaling a lack of necessary moisture. Therefore, a healthy scalp should ideally be clean, well-moisturized, and free from any irritants or excessive oils.