Expert explanation: Saltwater rinsing does effectively treat seborrheic alopecia while also suppressing dandruff production.Saltwater can inhibit sebum secretion, reduce damage to hair follicles, and also has antibacterial and disinfecting properties. Additionally, the sodium salts in saltwater help regulate the water-electrolyte balance in the scalp area, preventing metabolic disorders. However, it's important to note that saltwater can be quite irritating to the scalp and should not be used too frequently. Overuse may disrupt scalp secretion, leading to side effects like dry, dull hair and excessive dandruff.
Generally, wash for 5 minutes each time, twice weekly. Combining saltwater washing with scalp massage can double the effectiveness. While using saltwater, pay close attention to your diet. Fried, greasy, spicy foods, alcohol, and caffeine can stimulate increased oil production and dandruff, so these should be avoided as much as possible.