Pbos wonderfully simple to use Marble Bath Thickener is perfect for preparing the thickened water bath essential to the art of marbling! You can easily prepare your marbling bath by thoroughly stirring 2 heaped teaspoons of this product with 1 litre of water and allowing it to rest for 2 hours. The mixture can then be poured into a plastic tub and used for making beautiful marbled prints of your own!