18776 - Human Photoallergy Test

50 μl/ cm2 of the test article is applied directly to two sites on the skin and covered with the appropriate patch. 24 hours later, the patches are removed. The test sites are lightly wiped with a dry cloth/tissue and 3μl/ cm2 of test article is reapplied directly to the skin of the test site designated for irradiation, and lightly spread over the test site. 48 hours later the procedure is repeated to the same test sites. This process is repeated twice weekly for a total of six exposures.

One site is patched without treatment as control