Our clothespossess the property of be charged by both: natural visible and artificiallight - also the ultraviolet one - and to shine in darkness later.
Natural and fluorescent light charges the lingerie ( 2-5min.) quicker than filament light bulbs (5-10 min), after that they will emitlight during 15-25 minutes.
This clothescan be recharged with light as many times as you like. Washed by hand with coldwater and a soft detergent without rubbing, the lingerie won't lose itsproperties.