Contact photosensitivity dermatitis from sun-protective agent

Contact allergy/photo allergy to glyceryl PABA and benzocaine

“…Patch tests were negative, but photo-patch tests were positive. Goldman & Epstein (1969) also reported a patient with a photosensitivity eruption due to glyceryl PABA. Patch tests were positive but after light ex-posure were more intense suggesting both an allergic contact sensitivity and a photo allergy.…”

Drug Photoallergy

“…Where widely used topi ca l phenegan has proven an important cause of contact photoallergy, 23 · 2~ other reported causes included are topical diphenhydramine, 25 sulphonamides and chlorpromazine, ce rtain optical bright-eners26 and sunscreen components such as glyceryl p. aminobenzoic acid. 27 Certain plant substances can cause photoallergic dermatitis, for example, in the midwest region of the U.S., compositae photodermatitis due to ragweed is quite common. 29 A similar dermatitis possibly with a component of photoall ergy due to related species ha s been described in Australia and ha s been d esignated "Australian bush dermatitis."…”

Dermatitis due to benzocaine present in sunscreens containing glyceryl PABA (Escalol 106)

“…The results of these previous reports are shown in Table 1. Satulsky (1950) and Goldman & Epstein (1969) reported contact photosensitivity to glyceryl PABA, but did not investigate cross sensitivity reactions to this compound.…”