Detailed answer

However, chronic dehydration can affect the overall health of the scalp and hair, leading to hair thinning over time. Dehydration reduces the moisture content of the skin and scalp, which may impact the hair follicles' ability to produce healthy hair. It can also contribute to a dry and flaky scalp, which can worsen conditions like dandruff or scalp inflammation that may indirectly lead to hair thinning. Therefore, maintaining proper hydration is essential for overall skin and scalp health, but it is not the sole cause of hair thinning.