These blocks are very economical and are great if you are making lots of candles and are looking for colour consistency.
You could colour 2-10 kilos with this one block.
Just shave off what you need with a knife.
If you need to be more accurate a mini grater and small scales would be useful.
Another idea would be to melt the whole block down into a larger amount of wax and then use this as your colouring.
32 colours to choose from.