In what circumstance is a scalp treatment appropriate?

A scalp treatment is specifically designed to address issues that originate on the scalp, such as dandruff or excessive oiliness. These conditions can lead to discomfort and impact the overall health of the hair. Scalp treatments typically include cleansing, exfoliating, and moisturizing the scalp to promote a healthier environment for hair growth and alleviate symptoms like flakiness or irritation.

The other choices focus on aspects that are not directly related to the scalp's health. For instance, treating dry and damaged ends emphasizes the hair shaft rather than the scalp, while improving hair texture and enhancing color retention pertain to overall hair quality and aesthetics, which are not the primary concerns addressed by a scalp treatment.