Why aren't my Crystals Growing?
If you are having trouble obtaining crystal growth, the inside bottom of the container may be slightly rounded and not fully flat as needed. As indicated in the instructions, crystals will not grow if the container is not completely flat. Mugs and coffee cups often have rounded bottoms - the crystals will only grow if left in a flat-bottomed container. If you notice crystals growing around, but not on your rock, this is a sign the container is not fully flat. We recommend trying heat safe disposable cups which are fully flat if you experience difficulty. Luckily you can reheat and try again and again.
Can I Re-Use my Mug after Crystal Growth?
The crystals are made from a salt solution, and are safety tested. Therefore, as long as you wash your mugs, they can be reused as drinking mugs, but please be aware that the colors may stain some materials
Can I Purchase More Crystal Powder?
As our craft kits come fully packaged and sealed to us - they are not assembled in our warehouse - additional Crystal Powders are not available as extra supplies. Luckily, you can reheat the solution over and over for the desired effect.