Detailed answer

While dehydrated skin can lead to scalp dryness and itchiness, which can indirectly affect hair health, it is not the direct cause of thinning or hair loss on the scalp. Thinning or loss of hair can be caused by various factors such as genetic predisposition, hormonal imbalances, certain medical conditions, stress, or nutritional deficiencies. However, maintaining proper hydration levels and a healthy scalp is essential for overall hair health. Adequate water intake, a balanced diet, and appropriate hair care can help prevent scalp dryness and promote healthy hair growth.