Application of test substances (Positive photosensitizres and test products) in Finn-Chambers (duplicate)
6 or 24 h occlusive to the back
Irradiation 5-20 J/cm2 UVA (320-400 nm)
Responses were assessed immediately after irradiation and at 24 and 48 hours or 72 hours
Negative Controls :
Unirradiated patch test
UVA-irradiated skin without patch test
The positive test responses in immediately or within 24 h
were tend to phototoxic type rather than photoallergic.