The principle of tie-dye is very simple, if you tie an area of a garment tight enough and you immerse that item in a bowl of dye, the bound area becomes impervious to the dye.
You create your own unique patterns according to how the item is tied.
Please bring a white item of clothing you would like to dye. It must be cotton. If you don’t have white, bring a very light coloured fabric. If you don’t have any, you can buy a t-shirt in the shop for £5.99