Chapter 5 analyses perceptions by light therapists of the suntan (pigmentation) as the external sign of stored solar energy in the body, of the body visualised as literally ‘photogenic’ (light-generating). It does so by focusing specifically on advertisements using colour to convey the glowing tans and radiant smiles of healthy mothers, thriving babies and virile men, who consume light in the battle against ‘sun-starvation.’ Both sunlight and artificial light were directed onto mothers’ malfunctioning breasts to restore lactation, onto ‘backwards’ children to correct normal brain functioning, and onto injured soldiers to disinfect and heal their fetid battle wounds. In the regeneration of these highly-valued subjects, physicians and politicians alike perceived light as an aid to national salvation. Yet in encouraging citizens to emulate the dark skins of ‘primitive’ races, they conveyed ambivalent attitudes towards the merits of suntanned skin. This chapter investigates suntan as simultaneously a visual marker of recharged health and a troubling act of racial transgression during a period of heightened eugenic fervour in Britain and Europe.