_Diet_: Diet in case of hair disease calls for a combination of food containing lime, silica and gelatine. It must be selected from a list of foods that possess these special nourishing qualities. _Dech-Manna-Compositions_ =Capillogen=, =Plasmogen=, Gelatinogen, Eubiogen. _Physical_: No special directions required. IX. DEGENERATION OF THE SKIN TISSUE. According to the conception of the human body as a unit, it is not difficult to understand that the skin, while not a separate organ, forms the outermost layer of the body-tissues and is nourished _from within_. By means of more than 2,500,000 small openings in the skin, called the pores, communication is established between the external and the internal parts of the body. This produces a permanent exchange of matter, and thus the skin is, in fact, a second system of respiration of the greatest importance to the health of the entire body. Naturally it is subject to traumatic accidents through its exposed position. Traumatic affections cannot now be discussed; except to give a brief idea of the constitutional diseases of the skin which, like all others, originate in deficient blood. Often they are only secondary, and indications of various, more complicated, diseases. In a few cases they affect the skin alone, but are nevertheless constitutional, especially in such cases as could not exist at all, were the disposition not established constitutionally. There is hardly another department of medicine where the "quack" reaps so great a harvest as in the treatment of skin diseases. Thus the suppression of symptoms becomes the rule; the removal of causes is invariably neglected. Many forms of skin disease, being the result of sexual infections, are allowed to develop because prudery and other motives prevent the early investigation of the cause, and hence delay its prompt treatment and healing. It is easy and natural for every one to notice the skin and see when there is anything amiss. Upon discovery immediately consult an hygienic-dietetic physician, and follow his advice closely, since skin diseases are among the most obstinate to overcome. The physician will be able to determine whether there is real constitutional trouble or merely a superficial skin disease. Thus the underlying evil, if any, can be correctly treated, in combination with such specialities as the skin tissue requires. _Every skin disease must be treated from the inside_, so as to destroy the disposition and even the chance for development. In view of the large field and the great importance of this group, it will be advisable for every one to read the many pages that have been devoted to this special subject in my work, on "Regeneration" or "Dare To Be Healthy," Chapter X, Section 9. _Therapy._