Lancet. 1977 Nov 12;2(8046):1002-3.
Induction of hair growth in alopecia areata with D.N.C.B.
Happle R, Echternacht K.
43 patients with hair loss due to alopecia areata were treated with dinitrochlorobenzene. A significant difference of hair regrowth between the treated and untreated sides was seen in 33 patients. 21 patients showed regrowth of hair exclusively on the treated side, and in 12 patients hair regrowth was considerably faster and more dense on the treated side.