( Originally Published Early 1900's )
There is no permanent remedy for dandruff except frequent and regular brushing of the hair and keeping the head as clean as possible. The use of pomades or grease of any kind must be abandoned or kept within the most rigid limits ; and about once a week the head should be washed with clean cold water with a few drops of ammonia in it. rubbing the scalp vigorously with the fingers, and brushing the hair out dry. The hair washes and other preparations sold for this purpose are generally worthless, and, even when they afford temporary relief, they always aggravate the evil in the end. The cause of dandruff is the failure of the skin on the scalp to perform its functions properly, usually on account of the pores being stopped up with grease ; and the only remedy is to bring the skin back to its normal condition, which can be done only by cleanliness, local friction, and attention to the general health.