The Glow Bubbles™ bottle should be exposed to strong light prior to use. The longer and stronger the exposure - the better the results will be. Pour generously into running bath water and when ready, turn out the lights. Relax and enjoy the soft Glow Bubbles™. You may recharge the glow if you turn on the lights for a short time - but remember the results will be better if you close your eyes while the lights are on. So turn out the lights now and have a spectacular bath with your lover!