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thanks very much the suggestions, really appreciate it. i am looking for an ink which I can use as an anti-theft measure. Applied onto, for example a bottle of cream, if stolen, when the thief takes it out of the packaging, exposing to light, text will appear on the bottle. However, I must be able to remove it, for paying customers. Any suggestions? Merged post follows: Consecutive posts mergedsorry. not sure if im explaining it properly.. the ink initially will be invisible when coated onto the tube of cream. if stolen, and removed from packaging, the ink will become visible as exposed to light and create an image/text. however, if the product is not stolen, I need some way of removing this layer of ink from reacting/becoming visible from the tube of cream. Hope this is much clearer. Thanks.

Hi, I'm currently in the process of designing a product. It needs to work like invisible ink, but instead of reacting to UV light, I need it to show up when exposed to a normal bright light source. For instance if this clear ink was used on a bottle, text would appear when in it is taken out of its packaging and exposed to a normal bright light source. However,it would need to be removal by perhaps a special type of wipe/remover or other quicker alternative methods. Any comments or suggestions would be greatly appreciated. Thanks