Bruze M, Gruvberger B, Thune P
Department of Occupational Dermatology, University Hospital, Lund, Sweden.
Photodermatol. 1988 Aug;5(4):162-5.
High-purity glyceryl para-aminobenzoate was produced from a commercial source of the chemical by using a chromatographic technique. Negative test reactions to this purified substance were obtained when it was patch/photopatch-tested on 2 patients with contact and photocontact allergy to a nonpurified batch of glyceryl para-aminobenzoate.
