Send your own secret messages with this ingenious kit.
Contains two invisible ink pens with caps that - at the press of a button - emit powerful 'blacklight' beams to reveal the secret writing.
Not suitable for under 3s due to small parts. Invisible ink is non-toxic. UV light should not be shone directly into the eyes.
Publisher: Worldwide Company
You may also be interested in...
Would you like to proceed to the App store to download the Waterstones App?
Simply reserve online and pay at the counter when you collect. Available in shop from just two hours, subject to availability.
Thank you for your reservation
Your order is now being processed and we have sent a confirmation email to you at
When will my order be ready to collect?
Following the initial email, you will be contacted by the shop to confirm that your item is available for collection.
Call us on or send us an email at
Unfortunately there has been a problem with your order
Please try again or alternatively you can contact your chosen shop on or send us an email at