A. Representative images from the same person imaged using a conventional camera (top left), UV-sensitive camera (top right), UV-sensitive camera after application of SPF30 sunscreen (bottom left) and UV-sensitive camera after SPF30 moisturiser application (bottom right). B. Scatter graph of increase in image darkness relative to skin tone. C. Image segmentation for application analysis, boxes represent areas analysed; blue = face, green = eyelid, yellow = medial canthus. D, E and F dot plots of percentage missed with sunscreen and moisturiser in indicated areas. Black lines = mean and SD, n = 84. * indicates significant difference P<0.05 between groups, determined by paired t-test (D) or repeated-measures ANOVA (E and F). G. Within individual difference in area missed between moisturiser and sunscreen, positive scores = more missed after moisturiser application. H. Stacked column graph displaying medial canthus coverage scored as fully covered/missed, plotted as percentage of population.