After citing publications on photodegradation and the effect of light on susceptible materials from infrared and ultraviolet illumination, the author tested the possibilities of damage from a studio-type electronic flash lamp. Eight vinyl-acrylic co-polymer emulsion paint samples, plus two white pigmented linseed oil samples were used for the tests, with 8 Blue Cloth Standards as reference material. The reflectance spectra were obtained at the start of the experiment, after 15,000 flashes of the G.E. FT 503 high voltage Xenon arc lamp, and again at the termination of the experiment after 25,000 flashes or 336,000 Lux-hours. Comparison of the data from the photoflash experiment with those from the Blue Cloth Standards which were exposed (a) to 336,000 Lux-hours fluorescent lamps and (b) to 150 hours of ultraviolet illumination showed that the electronic flash lamp caused somewhat greater fading. From these preliminary tests, however, there is no evidence of any exceptional hazard associated with electronic flash lamps provided normal care is given to potentially light susceptible material.