1) how long it can delay every time?  that depend on you absorb the Sun time, usually it need absorb 10-30 minutes every time, usually it can delay some hours in the dark place. the expiration date usually have 7-10 years. 

2) you can mix it with the resin or varnish, it will become flash shine varnish

3) you can mix with the nail polish, your nail polish will be flash shine

4) others place: Noctilucent powder can be applied to display objects,clock and watch at night,phone keys,buttons,or field instrument Indicator,radios,cameras,movie theater seat number,traffic signs,general act the role ofing is tasted,apparel products,the power switch,fishing equipment, building decoration,fire emergency evacuation system.

5) Luminous pigment type is suitable for all kinds of transparent medium, such as coating, powder coating, printing ink, paint, enamel, ceramic, plastic, fiber, glass, etc.

6)  Identify location: use this material for electric switch, remote control, wall switches, plugs, sockets, lock, hand torch, door handles, handrails, fire-fighting equipment, fire alarm, lifesaving appliances, etc., can be marked the location of its existence, ease of use.

7) To prevent danger happening: this material is used for signal, note writing, emergency evacuation passageway and subway station, underground passage, civil air defense engineering, karaoke bars, dance halls, screens, supermarket stores, hospitals, railway stations, airports, docks, shelter and so on can have the effect of prevent danger happening.