Aldena STAR Particles

A 1.5-gram dose of STAR particles (10% concentration in aloe vera ointment) will be applied to the eight application sites (forearm and hand) and 100 mg of aloe vera will be applied to the control site on one of the forearms. Two rubbing cycles (20 and 30 cycles at 1 cycle/second) and three pressures (40, 60, and 80 kPa) will be evaluated.