Twenty (20) healthy volunteers will be randomised to receive placebo and GW870086 2% cream. They will also receive either of the following treatments: GW870086 0.2% cream, or clobetasol propionate 0.05% cream. Subjects will apply all 3 treatments once daily during the 42±2 day treatment period. However subjects who are randomised to receive the unblinded clobetasol propionate will only apply this once daily for a maximum of 21±2 days but will continue to dose with the other 2 treatments. If significant evidence of skin thinning is observed in any of the treatment arms (25% reduction in skin thickness measured using ultrasound) then application of this treatment will be discontinued. Three areas of approximately 5 x 5 cm on the arm will be identified and each treatment will be applied to the same area throughout the 42±2 day treatment period.