Envelope X-Ray Spray - Envelope Viewing Spray
Our secret envelope spray turns opaque paper temporarily translucent, facilitating discrete visual inspection of an envelope's contents without opening it!
In about 30-60 seconds after application, the envelope returns to its original condition, leaving no markings or discoloration.
Envelope Spray Features:
- Quickly assess an envelope's contents without opening it
- Makes a great science experiment
- Made in the USA