What should you know about hard water hair loss?

Dissolved minerals can coat the hair shaft, making strands feel dull, dry, tangled, or stiff. That can increase snapping during washing or brushing, which may look like shedding. Hard water does not explain every pattern of hair loss, especially widening parting, receding temples, smooth bald patches, scalp scale, or loss from tight hairstyles.

A clinician can distinguish breakage from hair shedding by examining the scalp and the ends of the hairs. Possible causes include telogen effluvium after a body stressor, pattern hair loss, alopecia areata, traction alopecia, or scalp ringworm.

Use a gentle shampoo and conditioner, detangle from the ends upward, and avoid vigorous scrubbing or very hot water. A periodic clarifying or chelating product may remove residue, but follow its instructions because frequent use can dry the scalp and hair. A shower filter may change water feel without treating a medical hair-loss condition. If shedding continues, arrange a dermatology review and bring a list of medicines, recent illnesses, diet changes, and hair practices.

Book an appointment promptly for smooth patches, scalp pain, marked itch, redness, scaling, broken hairs, or sudden heavy shedding. Seek earlier advice when eyebrows or eyelashes are also thinning, or when hair loss follows a tight style and the scalp looks shiny. A rapidly inflamed or painful scalp needs prompt assessment.

Ask whether the problem is breakage or shedding, whether the scalp needs testing, and which pattern fits your examination. Discuss possible triggers and whether treatments such as finasteride are appropriate for you, including pregnancy-related safety and other precautions.