Pigment-Tan-Safety Study of a Light-based Home Device for Hair Removal in Adult Subjects

This studies was designed to investigate the importance of skin type and UV-exposure on side effects after exposure to an Intense Pulsed Light Home-use device.

21 healthy subjects will receive 8 UV-exposures on one buttock and subsequently three weekly IPL-exposures.

Twenty-one healthy subjects will be exposed to UV-exposures 8 times over 3 weeks on a test-area (4 x 6cm) on one buttock to induce pigmentation. This will be followed by 3 weekly IPL (intense pulsed light) exposures. At 24 hours after the first IPL exposure, biopsies will be excised from the buttocks of the subjects (4 each).The skin will be evaluated after IPL exposure for: skin reactions, pain and mRNA expression of two pigment markers. Follow-up visits is planned at 1 and 4 weeks after the third and final IPL exposure.

Inclusion Criteria:

• Healthy, over 18 years, no childbearing potential, signed informed consent, no moles,tattoos, freckles or scars in the test-area, skin type II-IV

Exclusion Criteria:

• disease in test-area, prior treatment to IPL, taking drugs interfering with the immune system