The International Dermal Institute (IDI) will offer Oncology Treatments: Client Safety and Lymphedema on Monday, June 24, 2013 from 10:00 a.m. to 5:00 p.m. at the brand's world headquarters located in Carson, Calif. The workshop is open exclusively to licensed skin therapists at a fee of $175. The workshop will be conducted by skin trainer and supervisor Johnnette du Rand, C.M.T., N.C.T.M.B., M.L.D., along with…