TREATMENT OF DANDRUFF AND SEBORRHEIC ERUPTIONS 445 :}. -..• ,: '•! ß ß .. ':•c .. • ' . ?:.' .•. * . -.: .• -•3•. .. - •½- : :•... ...• :a .-.- •: .:?" .j . ß ,,:..::..: .:r ': " ,...•:... .. ...•{e• •?'•'"'• •'•.:'. ...... . •.. ..:: ,.?',f•?:• . '"'• .. ':• .. . ... ½ •, ...:?: • - ..•, .. .. : .:.:. . .. .... . .......... ... Figure 2.•Dandruff Mth seborrheic dermatitis. The patient presented diffuse dandruff. The skin of the scalp was mildly red. On the scalp margins, back of the ears, scattered over the chest and upper back there were mildly red dry scaly lesions of seborrheic dermatitis. ... ::- . Figure &--Acute seborrheic dermatitis. The scalp .was red, moist and at places oozing. The ears and ad- jacent skin were bright red, moist and oozing.

446 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Older writers included in the category of seborrhea a dry form called seborrhea sicca or dandruff. Many present writers maintain that the term seborrhea sicca is a misnomer. What it connotes is not a disease of the sebaceous glands, but of the epidermis. In accordance with this view :?! j: .. . .. Figure 4.--Dandruff with seborrheic dermatitis. The patient had diffuse dry dandruff. Over the sternum and in each axilla there were moderately red patches covered with greasy scales, seborrhea sicca is called pityriasis, of which there are two forms: a scaling form, pityriasis simplex capitis and a crusting form, pityriasis steatoides. Both forms are noninflammatory. In pityriasis steatoides the scales are more greasy, more adherent, yellowish in color and may form waxy crusts.