This section is from the book "The Home Hand-Book of Domestic Hygiene and Rational Medicine. Volume 2.", by J. H. Kellogg, M.D.. Also available from Amazon: The Home Hand-Book of Domestic Hygiene and Rational Medicine, Volume 2.
Prevention is the best remedy/as many cases are in curable. The scalp should never be overheated. Head coverings should be light, and should allow free access of air to the head at all times. The hair should not be harshly brushed with a stiff brush, and should never be combed with a fine, sharp-toothed comb. This is particularly true if dandruff is present, as the measures referred to will certainly aggravate the difficulty. When the hair is very dry, a little fine unguent of some kind may be employed; but the common practice of "greasing" the hair is a bad one. Such harsh mixtures as are often employed by barbers in shampooing are very harmful to the hair. Soap should be rarely used unless of the finest quality, but the head should be kept clean by frequent washing with warm water, shampooing with the white of egg, followed by thorough rinsing.
When the scalp is smooth and shiny, especially in cases of "patchy baldness," which is due to nervous disease of the scalp, little can be expected from treatment. If a large number of hairs are still present, however, even though they are very short and thin, something may be done. The case is much more hopeful in young than in old persons. When hereditary, little can be expected from treatment. First attention should be given to the general health. The various stimulating lotions which are advertised for this purpose should be carefully avoided, as they will be rarely successful, and may do much harm. No amount of stimulation of the scalp will effect more than temporary benefit unless the general nutritive forces of the patient are also improved by attention to hygiene.
It is rarely necessary to cut the hair close, and shaving the scalp is quite unnecessary. If the scalp is dry, a little fine oil should be rubbed upon it daily with much gentle friction. If dandruff is present, treat as directed. If the case is obstinate, consult a physician.